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  1. //********************************************************
  2. //
  3. // Assignment 8 - Structures and Strings and Pointers
  4. //
  5. // Name: <replace with your name>
  6. //
  7. // Class: C Programming, <replace with Semester and Year>
  8. //
  9. // Date: <replace with the current date>
  10. //
  11. // Description: Program which determines overtime and 
  12. // gross pay for a set of employees with outputs sent 
  13. // to standard output (the screen).
  14. //
  15. // This assignment also adds the employee name, their tax state,
  16. // and calculates the state tax, federal tax, and net pay.   It
  17. // also calculates totals, averages, minimum, and maximum values.
  18. //
  19. // Array and Structure references are to be replaced with
  20. // pointer references to speed up the processing of this code.
  21. //
  22. // Call by Reference design (using pointers)
  23. //
  24. //********************************************************
  25.  
  26. // necessary header files
  27. #include <stdio.h>
  28. #include <string.h>
  29. #include <ctype.h>
  30.  
  31. // define constants
  32. #define SIZE 5
  33. #define STD_HOURS 40.0
  34. #define OT_RATE 1.5
  35. #define MA_TAX_RATE 0.05
  36. #define NH_TAX_RATE 0.0
  37. #define VT_TAX_RATE 0.06
  38. #define CA_TAX_RATE 0.07
  39. #define DEFAULT_TAX_RATE 0.08
  40. #define NAME_SIZE 20
  41. #define TAX_STATE_SIZE 3
  42. #define FED_TAX_RATE 0.25
  43. #define FIRST_NAME_SIZE 10
  44. #define LAST_NAME_SIZE 10
  45.  
  46. // Define a structure type to store an employee name
  47. // ... note how one could easily extend this to other parts
  48. // parts of a name:  Middle, Nickname, Prefix, Suffix, etc.
  49. struct name
  50. {
  51.     char firstName[FIRST_NAME_SIZE];
  52.     char lastName [LAST_NAME_SIZE];
  53. };
  54.  
  55. // Define a structure type to pass employee data between functions
  56. // Note that the structure type is global, but you don't want a variable
  57. // of that type to be global. Best to declare a variable of that type
  58. // in a function like main or another function and pass as needed.
  59. struct employee
  60. {
  61.     struct name empName;
  62.     char taxState [TAX_STATE_SIZE];
  63.     long int clockNumber;
  64.     float wageRate;
  65.     float hours;
  66.     float overtimeHrs;
  67.     float grossPay;
  68.     float stateTax;
  69.     float fedTax;
  70.     float netPay;
  71. };
  72.  
  73. // this structure type defines the totals of all floating point items
  74. // so they can be totaled and used also to calculate averages
  75. struct totals
  76. {
  77.     float total_wageRate;
  78.     float total_hours;
  79.     float total_overtimeHrs;
  80.     float total_grossPay;
  81.     float total_stateTax;
  82.     float total_fedTax;
  83.     float total_netPay;
  84. };
  85.  
  86. // this structure type defines the min and max values of all floating
  87. // point items so they can be display in our final report
  88. struct min_max
  89. {
  90.     float min_wageRate;
  91.     float min_hours;
  92.     float min_overtimeHrs;
  93.     float min_grossPay;
  94.     float min_stateTax;
  95.     float min_fedTax;
  96.     float min_netPay;
  97.     float max_wageRate;
  98.     float max_hours;
  99.     float max_overtimeHrs;
  100.     float max_grossPay;
  101.     float max_stateTax;
  102.     float max_fedTax;
  103.     float max_netPay;
  104. };
  105.  
  106. // define prototypes here for each function except main
  107.  
  108. // These prototypes have already been transitioned to pointers
  109. void getHours (struct employee * emp_ptr, int theSize);
  110. void printEmp (struct employee * emp_ptr, int theSize);
  111.  
  112. void calcEmployeeTotals (struct employee * emp_ptr,
  113.                          struct totals * emp_totals_ptr,
  114.                          int theSize);
  115.  
  116. void calcEmployeeMinMax (struct employee * emp_ptr,
  117.                          struct min_max * emp_MinMax_ptr,
  118.                          int theSize);
  119.  
  120. // This prototype does not need to use pointers
  121. void printHeader (void);
  122.  
  123.  
  124. // TODO - Transition these prototypes from using arrays to
  125. //        using pointers (use emp_ptr instead of
  126. //        employeeData for the first parameter).  See prototypes
  127. //        above for hints.
  128.  
  129. void calcOvertimeHrs (struct employee employeeData[], int theSize);
  130. void calcGrossPay (struct employee employeeData[], int theSize);
  131. void calcStateTax (struct employee employeeData[], int theSize);
  132. void calcFedTax (struct employee employeeData[], int theSize);
  133. void calcNetPay (struct employee employeeData[], int theSize);
  134.  
  135. void printEmpStatistics (struct totals employeeTotals, 
  136.                          struct min_max employeeMinMax,
  137.                          int theSize);
  138.  
  139. int main ()
  140. {
  141.  
  142.     // Set up a local variable to store the employee information
  143.     // Initialize the name, tax state, clock number, and wage rate
  144.     struct employee employeeData[SIZE] = {
  145.         { {"Connie", "Cobol"}, "MA", 98401, 10.60},
  146.         { {"Mary", "Apl"}, "NH", 526488, 9.75 },
  147.         { {"Frank", "Fortran"}, "VT", 765349, 10.50 },
  148.         { {"Jeff", "Ada"}, "NY", 34645, 12.25 },
  149.         { {"Anton", "Pascal"},"CA",127615, 8.35 }
  150.     };
  151.  
  152.     // declare a pointer to the array of employee structures
  153.     struct employee *emp_ptr;
  154.  
  155.     // set the pointer to point to the array of employees
  156.     emp_ptr = employeeData;
  157.  
  158.     // set up structure to store totals and initialize all to zero
  159.     struct totals employeeTotals  = {0,0,0,0,0,0,0};
  160.  
  161.     // pointer to the employeeTotals structure
  162.     struct totals * emp_totals_ptr = &employeeTotals;
  163.  
  164.     // set up structure to store min and max values and initialize all to zero
  165.     struct min_max employeeMinMax = {0,0,0,0,0,0,0,0,0,0,0,0,0,0};
  166.  
  167.     // pointer to the employeeMinMax structure
  168.     struct min_max * emp_minMax_ptr = &employeeMinMax;
  169.  
  170.     // Call functions as needed to read and calculate information
  171.  
  172.     // Prompt for the number of hours worked by the employee 
  173.     getHours (employeeData, SIZE); 
  174.  
  175.     // Calculate the overtime hours
  176.     calcOvertimeHrs (employeeData, SIZE);
  177.  
  178.     // Calculate the weekly gross pay
  179.     calcGrossPay (employeeData, SIZE); 
  180.  
  181.     // Calculate the state tax                                       
  182.     calcStateTax (employeeData, SIZE);
  183.  
  184.     // Calculate the federal tax                                                   
  185.     calcFedTax (employeeData, SIZE);
  186.  
  187.     // Calculate the net pay after taxes   
  188.     calcNetPay (employeeData, SIZE); 
  189.  
  190.     // Keep a running sum of the employee totals
  191.     // Note the & to specify the address of the employeeTotals
  192.     // structure.  Needed since pointers work with addresses.
  193.     calcEmployeeTotals (employeeData, 
  194.                         &employeeTotals, 
  195.                         SIZE);
  196.  
  197.     // Keep a running update of the employee minimum and maximum values
  198.     calcEmployeeMinMax (employeeData, 
  199.                         &employeeMinMax,
  200.                         SIZE); 
  201.     // Print the column headers
  202.     printHeader();
  203.  
  204.     // print out final information on each employee
  205.     printEmp (employeeData, SIZE); 
  206.  
  207.     // TODO - Transition this call to using pointers.
  208.     //        Hint:  Pass the address of these two structures
  209.     //        like it is being done with calcEmployeeTotals
  210.     //        and calcEmployeeMinMax.
  211.  
  212.     // print the totals and averages for all float items
  213.     printEmpStatistics (employeeTotals, 
  214.                         employeeMinMax, 
  215.                         SIZE);
  216.  
  217.     return (0); // success
  218.  
  219. } // main
  220.  
  221. //**************************************************************
  222. // Function: getHours 
  223. // 
  224. // Purpose: Obtains input from user, the number of hours worked 
  225. //          per employee and updates it in the array of structures
  226. //          for each employee.
  227. // 
  228. // Parameters:
  229. //
  230. //   emp_ptr - pointer to array of employees (i.e., struct employee)
  231. //   theSize - the array size (i.e., number of employees)
  232. // 
  233. // Returns: void (the employee hours gets updated by reference)
  234. //  
  235. //**************************************************************
  236.  
  237. void getHours (struct employee * emp_ptr, int theSize) 
  238. { 
  239.  
  240.     int i;  // loop index
  241.  
  242.     // read in hours for each employee
  243.     for (i = 0; i < theSize; ++i)
  244.     {
  245.         // Read in hours for employee 
  246.         printf("\nEnter hours worked by emp # %06li: ", emp_ptr->clockNumber); 
  247.         scanf ("%f", &emp_ptr->hours); 
  248.  
  249.         // set pointer to next employee
  250.         ++emp_ptr;
  251.     }
  252.  
  253. } // getHours
  254.  
  255. //**************************************************************
  256. // Function: printHeader
  257. // 
  258. // Purpose: Prints the initial table header information.
  259. // 
  260. // Parameters: none
  261. // 
  262. // Returns: void
  263. //  
  264. //**************************************************************
  265.  
  266. void printHeader (void) 
  267. { 
  268.  
  269.     printf ("\n\n*** Pay Calculator ***\n");
  270.  
  271.     // print the table header
  272.     printf("\n--------------------------------------------------------------");
  273.     printf("-------------------");
  274.     printf("\nName                Tax  Clock# Wage   Hours  OT   Gross ");
  275.     printf("  State  Fed      Net");
  276.     printf("\n                   State                           Pay   ");
  277.     printf("  Tax    Tax      Pay");
  278.  
  279.     printf("\n--------------------------------------------------------------");
  280.     printf("-------------------");
  281.  
  282. } // printHeader
  283.  
  284. //************************************************************* 
  285. // Function: printEmp 
  286. // 
  287. // Purpose: Prints out all the information for each employee
  288. //          in a nice and orderly table format.
  289. // 
  290. // Parameters: 
  291. //
  292. //   emp_ptr - pointer to array of struct employee
  293. //   theSize - the array size (i.e., number of employees)
  294. // 
  295. // Returns: void
  296. //  
  297. //**************************************************************
  298.  
  299. void printEmp (struct employee * emp_ptr, int theSize)
  300. {
  301.  
  302.     int i;  // array and loop index
  303.  
  304.     // Used to format the employee name
  305.     char name [FIRST_NAME_SIZE + LAST_NAME_SIZE + 1];
  306.  
  307.     // read in hours for each employee
  308.     for (i = 0; i < theSize; ++i)
  309.     {
  310.         // While you could just print the first and last name in the printf
  311.         // statement that follows, you could also use various C string library
  312.         // functions to format the name exactly the way you want it.  Breaking
  313.         // the name into first and last members additionally gives you some 
  314.         // flexibility in printing.  This also becomes more useful if we decide
  315.         // later to store other parts of a person's name. I really did this just 
  316.         // to show you how to work with some of the common string functions.
  317.         strcpy (name, emp_ptr->empName.firstName);
  318.         strcat (name, " "); // add a space between first and last names
  319.         strcat (name, emp_ptr->empName.lastName);
  320.  
  321.         // Print out a single employee
  322.         printf("\n%-20.20s %-2.2s  %06li %5.2f  %4.1f  %4.1f %7.2f %6.2f %7.2f %8.2f",
  323.                name, emp_ptr->taxState, emp_ptr->clockNumber, 
  324.                emp_ptr->wageRate, emp_ptr->hours,
  325.                emp_ptr->overtimeHrs, emp_ptr->grossPay, 
  326.                emp_ptr->stateTax, emp_ptr->fedTax, 
  327.                emp_ptr->netPay);
  328.  
  329.         // set pointer to next employee
  330.         ++emp_ptr;
  331.  
  332.     } // for
  333.  
  334. } // printEmp
  335.  
  336. //************************************************************* 
  337. // Function: printEmpStatistics 
  338. // 
  339. // Purpose: Prints out the summary totals and averages of all 
  340. //          floating point value items for all employees
  341. //          that have been processed.  It also prints
  342. //          out the min and max values.
  343. // 
  344. // Parameters: 
  345. //
  346. //   employeeTotals - a structure containing a running total 
  347. //                    of all employee floating point items 
  348. //   employeeMinMax - a structure containing all the minimum 
  349. //                    and maximum values of all employee 
  350. //                    floating point items
  351. //   theSize - the total number of employees processed, used 
  352. //             to check for zero or negative divide condition.
  353. // 
  354. // Returns: void
  355. //  
  356. //**************************************************************
  357.  
  358. // TODO - Transition this function from Structure references to
  359. //        Pointer references.  Two steps are needed:
  360. //
  361. //    1) Change both structure parameters to pointers (use
  362. //       emp_totals_ptr and emp_MinMax_ptr).
  363. //
  364. //    2) Change all structures references to pointer references
  365. //       within all places inside the function body.
  366. //
  367. //       For example, instead of employeeTotals.total_wageRate
  368. //       ... use emp_totals_ptr->total_wageRate
  369. //       and instead of employeeMinMax.min_wageRate 
  370. //       ... use emp_MinMax_ptr->min_wageRate   
  371.  
  372. void printEmpStatistics (struct totals employeeTotals, 
  373.                          struct min_max employeeMinMax,
  374.                          int theSize)
  375. {
  376.  
  377.     // print a separator line
  378.     printf("\n--------------------------------------------------------------");
  379.     printf("-------------------");
  380.  
  381.     // print the totals for all the floating point fields
  382.     printf("\nTotals:                         %5.2f %5.1f %5.1f %7.2f %6.2f %7.2f %8.2f",
  383.            employeeTotals.total_wageRate,
  384.            employeeTotals.total_hours,
  385.            employeeTotals.total_overtimeHrs,
  386.            employeeTotals.total_grossPay,
  387.            employeeTotals.total_stateTax,
  388.            employeeTotals.total_fedTax,
  389.            employeeTotals.total_netPay);
  390.  
  391.     // make sure you don't divide by zero or a negative number
  392.     if (theSize > 0)       
  393.     {
  394.         // print the averages for all the floating point fields
  395.         printf("\nAverages:                       %5.2f %5.1f %5.1f %7.2f %6.2f %7.2f %8.2f",
  396.                employeeTotals.total_wageRate/theSize,
  397.                employeeTotals.total_hours/theSize,
  398.                employeeTotals.total_overtimeHrs/theSize,
  399.                employeeTotals.total_grossPay/theSize,
  400.                employeeTotals.total_stateTax/theSize,
  401.                employeeTotals.total_fedTax/theSize,
  402.                employeeTotals.total_netPay/theSize);
  403.     } // if
  404.  
  405.     // print the min and max values
  406.  
  407.     printf("\nMinimum:                        %5.2f %5.1f %5.1f %7.2f %6.2f %7.2f %8.2f",
  408.            employeeMinMax.min_wageRate,
  409.            employeeMinMax.min_hours,
  410.            employeeMinMax.min_overtimeHrs,
  411.            employeeMinMax.min_grossPay,
  412.            employeeMinMax.min_stateTax,
  413.            employeeMinMax.min_fedTax,
  414.            employeeMinMax.min_netPay);
  415.  
  416.     printf("\nMaximum:                        %5.2f %5.1f %5.1f %7.2f %6.2f %7.2f %8.2f",
  417.            employeeMinMax.max_wageRate,
  418.            employeeMinMax.max_hours,
  419.            employeeMinMax.max_overtimeHrs,
  420.            employeeMinMax.max_grossPay,
  421.            employeeMinMax.max_stateTax,
  422.            employeeMinMax.max_fedTax,
  423.            employeeMinMax.max_netPay);
  424.  
  425. }  // printEmpStatistics
  426.  
  427. //*************************************************************
  428. // Function: calcOvertimeHrs
  429. //
  430. // Purpose: Calculates the overtime hours worked by an employee
  431. //          in a given week for each employee.
  432. //
  433. // Parameters:
  434. //
  435. //   employeeData - array of employees (i.e., struct employee)
  436. //   theSize - the array size (i.e., number of employees)
  437. //
  438. // Returns: void (the overtime hours gets updated by reference)
  439. //
  440. //**************************************************************
  441.  
  442. // TODO - Transition this function from Array references to
  443. //        Pointer references.   Perform these three (3) steps:
  444. //
  445. //     1) Change the employeeData parameter to a pointer (emp_ptr)
  446. //     2) Change all array references in function body to pointer
  447. //        references (use emp_ptr).
  448. //     3) Increment emp_ptr just before the end of the loop
  449. //        to access the next employee
  450. //
  451. // Note:  Review how it was done already in the getHours function
  452.  
  453. void calcOvertimeHrs (struct employee employeeData[], int theSize)
  454. {
  455.  
  456.     int i;  // array and loop index
  457.  
  458.     // calculate overtime hours for each employee
  459.     for (i = 0; i < theSize; ++i)
  460.     {  
  461.         // Any overtime ?
  462.         if (employeeData[i].hours >= STD_HOURS)
  463.         {
  464.             employeeData[i].overtimeHrs = employeeData[i].hours - STD_HOURS;
  465.         }
  466.         else // no overtime
  467.         {
  468.               employeeData[i].overtimeHrs = 0;
  469.         }
  470.  
  471.     } // for
  472.  
  473. }  // calcOvertimeHrs
  474.  
  475. //*************************************************************
  476. // Function: calcGrossPay
  477. //
  478. // Purpose: Calculates the gross pay based on the the normal pay
  479. //          and any overtime pay for a given week for each
  480. //          employee.
  481. //
  482. // Parameters:
  483. //
  484. //   employeeData - array of employees (i.e., struct employee)
  485. //   theSize - the array size (i.e., number of employees)
  486. //
  487. // Returns: void (the gross pay gets updated by reference)
  488. //
  489. //**************************************************************
  490.  
  491. // TODO - Transition this function from Array references to
  492. //        Pointer references.   Perform these three (3) steps:
  493. //
  494. //     1) Change the employeeData parameter to a pointer (emp_ptr)
  495. //     2) Change all array references in function body to pointer
  496. //        references (use emp_ptr).
  497. //     3) Increment emp_ptr just before the end of the loop
  498. //        to access the next employee
  499. //
  500. // Note:  Review how it was done already in the getHours function
  501.  
  502. void calcGrossPay (struct employee employeeData[], int theSize)
  503. {
  504.     int i;                // loop and array index
  505.     float theNormalPay;   // normal pay without any overtime hours
  506.     float theOvertimePay; // overtime pay
  507.  
  508.     // calculate grossPay for each employee
  509.     for (i=0; i < theSize; ++i)
  510.     {
  511.         // calculate normal pay and any overtime pay
  512.         theNormalPay = employeeData[i].wageRate * 
  513.                        (employeeData[i].hours - employeeData[i].overtimeHrs);
  514.         theOvertimePay = employeeData[i].overtimeHrs * 
  515.                          (OT_RATE * employeeData[i].wageRate);
  516.  
  517.         // calculate gross pay for employee as normalPay + any overtime pay
  518.         employeeData[i].grossPay = theNormalPay + theOvertimePay;
  519.     }
  520.  
  521. } // calcGrossPay
  522.  
  523. //*************************************************************
  524. // Function: calcStateTax
  525. //
  526. // Purpose: Calculates the State Tax owed based on gross pay
  527. //          for each employee.  State tax rate is based on the 
  528. //          the designated tax state based on where the
  529. //          employee is actually performing the work.  Each
  530. //          state decides their tax rate.
  531. //
  532. // Parameters:
  533. //
  534. //   employeeData - array of employees (i.e., struct employee)
  535. //   theSize - the array size (i.e., number of employees)
  536. //
  537. // Returns: void (the state tax gets updated by reference)
  538. //
  539. //**************************************************************
  540.  
  541. // TODO - Transition this function from Array references to
  542. //        Pointer references.   Perform these three (3) steps:
  543. //
  544. //     1) Change the employeeData parameter to a pointer (emp_ptr)
  545. //     2) Change all array references in function body to pointer
  546. //        references (use emp_ptr).
  547. //     3) Increment emp_ptr just before the end of the loop
  548. //        to access the next employee
  549. //
  550. // Note:  Review how it was done already in the getHours function
  551.  
  552. void calcStateTax (struct employee employeeData[], int theSize)
  553. {
  554.  
  555.     int i; // loop and array index
  556.  
  557.     // calculate state tax based on where employee works
  558.     for (i=0; i < theSize; ++i)
  559.     {
  560.         // Make sure tax state is all uppercase
  561.         if (islower(employeeData[i].taxState[0]))
  562.             employeeData[i].taxState[0] = toupper(employeeData[i].taxState[0]);
  563.         if (islower(employeeData[i].taxState[1]))
  564.             employeeData[i].taxState[1] = toupper(employeeData[i].taxState[1]);
  565.  
  566.         // calculate state tax based on where employee resides
  567.         if (strcmp(employeeData[i].taxState, "MA") == 0)
  568.             employeeData[i].stateTax = employeeData[i].grossPay * MA_TAX_RATE;
  569.         else if (strcmp(employeeData[i].taxState, "VT") == 0)
  570.             employeeData[i].stateTax = employeeData[i].grossPay * VT_TAX_RATE;
  571.         else if (strcmp(employeeData[i].taxState, "NH") == 0)
  572.             employeeData[i].stateTax = employeeData[i].grossPay * NH_TAX_RATE;
  573.         else if (strcmp(employeeData[i].taxState, "CA") == 0)
  574.             employeeData[i].stateTax = employeeData[i].grossPay * CA_TAX_RATE;
  575.         else
  576.             // any other state is the default rate
  577.             employeeData[i].stateTax = employeeData[i].grossPay * DEFAULT_TAX_RATE;
  578.     } // for
  579.  
  580. } // calcStateTax
  581.  
  582. //*************************************************************
  583. // Function: calcFedTax
  584. //
  585. // Purpose: Calculates the Federal Tax owed based on the gross 
  586. //          pay for each employee
  587. //
  588. // Parameters:
  589. //
  590. //   employeeData - array of employees (i.e., struct employee)
  591. //   theSize - the array size (i.e., number of employees)
  592. //
  593. // Returns: void (the federal tax gets updated by reference)
  594. //
  595. //**************************************************************
  596.  
  597. // TODO - Transition this function from Array references to
  598. //        Pointer references.   Perform these three (3) steps:
  599. //
  600. //     1) Change the employeeData parameter to a pointer (emp_ptr)
  601. //     2) Change all array references in function body to pointer
  602. //        references (use emp_ptr).
  603. //     3) Increment emp_ptr just before the end of the loop
  604. //        to access the next employee
  605. //
  606. // Note:  Review how it was done already in the getHours function
  607.  
  608. void calcFedTax (struct employee employeeData[], int theSize)
  609. {
  610.  
  611.     int i;  // loop and array index
  612.  
  613.     // calculate the federal tax for each employee
  614.     for (i=0; i < theSize; ++i)
  615.     {
  616.         // Fed Tax is the same for all regardless of state
  617.         employeeData[i].fedTax = employeeData[i].grossPay * FED_TAX_RATE;
  618.  
  619.     } // for
  620.  
  621. } // calcFedTax
  622.  
  623. //*************************************************************
  624. // Function: calcNetPay
  625. //
  626. // Purpose: Calculates the net pay as the gross pay minus any
  627. //          state and federal taxes owed for each employee.
  628. //          Essentially, their "take home" pay.
  629. //
  630. // Parameters:
  631. //
  632. //   employeeData - array of employees (i.e., struct employee)
  633. //   theSize - the array size (i.e., number of employees)
  634. //
  635. // Returns: void (the net pay gets updated by reference)
  636. //
  637. //**************************************************************
  638.  
  639. // TODO - Transition this function from Array references to
  640. //        Pointer references.   Perform these three (3) steps:
  641. //
  642. //     1) Change the employeeData parameter to a pointer (emp_ptr)
  643. //     2) Change all array references in function body to pointer
  644. //        references (use emp_ptr).
  645. //     3) Increment emp_ptr just before the end of the loop
  646. //        to access the next employee
  647. //
  648. // Note:  Review how it was done already in the getHours function
  649.  
  650. void calcNetPay (struct employee employeeData[], int theSize)
  651. {
  652.     int i;               // loop and array index
  653.     float theTotalTaxes; // the total state and federal tax
  654.  
  655.     // calculate the take home pay for each employee
  656.     for (i=0; i < theSize; ++i)
  657.     {
  658.         // calculate the total state and federal taxes
  659.         theTotalTaxes = employeeData[i].stateTax + employeeData[i].fedTax;
  660.  
  661.         // calculate the net pay
  662.         employeeData[i].netPay = employeeData[i].grossPay - theTotalTaxes;
  663.  
  664.     } // for
  665.  
  666. } // calcNetPay
  667.  
  668. //*************************************************************
  669. // Function: calcEmployeeTotals
  670. //
  671. // Purpose: Performs a running total (sum) of each employee
  672. //          floating point member in the array of structures 
  673. //
  674. // Parameters:
  675. //
  676. //   emp_ptr - pointer to array of employees (structure)
  677. //   emp_totals_ptr - pointer to a structure containing the 
  678. //                    running totals of all floating point
  679. //                    members in the array of employee structure
  680. //                    that is accessed and referenced by emp_ptr
  681. //   theSize - the array size (i.e., number of employees)
  682. //
  683. // Returns: 
  684. //
  685. //   void (the employeeTotals structure gets updated by reference)
  686. //
  687. //**************************************************************
  688.  
  689. void calcEmployeeTotals (struct employee * emp_ptr,
  690.                          struct totals * emp_totals_ptr,
  691.                          int theSize)
  692. {
  693.  
  694.     int i; // loop index
  695.  
  696.     // total up each floating point item for all employees
  697.     for (i = 0; i < theSize; ++i)
  698.     {
  699.         // add current employee data to our running totals
  700.         emp_totals_ptr->total_wageRate += emp_ptr->wageRate;
  701.         emp_totals_ptr->total_hours += emp_ptr->hours;
  702.         emp_totals_ptr->total_overtimeHrs += emp_ptr->overtimeHrs;
  703.         emp_totals_ptr->total_grossPay += emp_ptr->grossPay;
  704.         emp_totals_ptr->total_stateTax += emp_ptr->stateTax;
  705.         emp_totals_ptr->total_fedTax += emp_ptr->fedTax;
  706.         emp_totals_ptr->total_netPay += emp_ptr->netPay;
  707.  
  708.         // go to next employee in our array of structures
  709.         // Note:  We don't need to increment the emp_totals_ptr
  710.         //        because it is not an array
  711.         ++emp_ptr;
  712.  
  713.     } // for
  714.  
  715.     // no need to return anything since we used pointers and have
  716.     // been referring the array of employee structure and the 
  717.     // the total structure from its calling function ... this
  718.     // is the power of Call by Reference.
  719.  
  720. } // calcEmployeeTotals
  721.  
  722. //*************************************************************
  723. // Function: calcEmployeeMinMax
  724. //
  725. // Purpose: Accepts various floating point values from an
  726. //          employee and adds to a running update of min
  727. //          and max values
  728. //
  729. // Parameters:
  730. //
  731. //   employeeData   - array of employees (i.e., struct employee)
  732. //   employeeTotals - structure containing a running totals 
  733. //                    of all fields above
  734. //   theSize - the array size (i.e., number of employees)
  735. //
  736. // Returns: 
  737. //
  738. //   employeeMinMax - updated employeeMinMax structure
  739. //
  740. //**************************************************************
  741.  
  742. void calcEmployeeMinMax (struct employee * emp_ptr,
  743.                          struct min_max * emp_minMax_ptr,
  744.                          int theSize)
  745. {
  746.  
  747.     int i; // loop index
  748.  
  749.     // At this point, emp_ptr is pointing to the first
  750.     // employee which is located in the first element
  751.     // of our employee array of structures (employeeData).
  752.  
  753.     // As this is the first employee, set each min 
  754.     // min and max value using our emp_minMax_ptr
  755.     // to the associated member fields below.  They
  756.     // will become the initial baseline that we  
  757.     // can check and update if needed against the 
  758.     // remaining employees.
  759.  
  760.     // set the min to the first employee members
  761.     emp_minMax_ptr->min_wageRate = emp_ptr->wageRate; 
  762.     emp_minMax_ptr->min_hours = emp_ptr->hours;
  763.     emp_minMax_ptr->min_overtimeHrs = emp_ptr->overtimeHrs; 
  764.     emp_minMax_ptr->min_grossPay = emp_ptr->grossPay;
  765.     emp_minMax_ptr->min_stateTax = emp_ptr->stateTax;
  766.     emp_minMax_ptr->min_fedTax = emp_ptr->fedTax;
  767.     emp_minMax_ptr->min_netPay = emp_ptr->netPay;
  768.  
  769.     // set the max to the first employee members
  770.     emp_minMax_ptr->max_wageRate = emp_ptr->wageRate; 
  771.     emp_minMax_ptr->max_hours = emp_ptr->hours;
  772.     emp_minMax_ptr->max_overtimeHrs = emp_ptr->overtimeHrs; 
  773.     emp_minMax_ptr->max_grossPay = emp_ptr->grossPay;
  774.     emp_minMax_ptr->max_stateTax = emp_ptr->stateTax;
  775.     emp_minMax_ptr->max_fedTax = emp_ptr->fedTax;
  776.     emp_minMax_ptr->max_netPay = emp_ptr->netPay;
  777.  
  778.     // compare the rest of the employees to each other for min and max
  779.     for (i = 1; i < theSize; ++i)
  780.     {
  781.  
  782.         // go to next employee in our array of structures
  783.         // Note:  We don't need to increment the emp_totals_ptr
  784.         //        because it is not an array
  785.         ++emp_ptr;
  786.  
  787.         // check if current Wage Rate is the new min and/or max
  788.         if (emp_ptr->wageRate < emp_minMax_ptr->min_wageRate)
  789.         {
  790.             emp_minMax_ptr->min_wageRate = emp_ptr->wageRate;
  791.         }
  792.  
  793.         if (emp_ptr->wageRate > emp_minMax_ptr->max_wageRate)
  794.         {
  795.             emp_minMax_ptr->max_wageRate = emp_ptr->wageRate;
  796.         }
  797.  
  798.         // check is current Hours is the new min and/or max
  799.         if (emp_ptr->hours < emp_minMax_ptr->min_hours)
  800.         {
  801.             emp_minMax_ptr->min_hours = emp_ptr->hours;
  802.         }
  803.  
  804.         if (emp_ptr->hours > emp_minMax_ptr->max_hours)
  805.         {
  806.             emp_minMax_ptr->max_hours = emp_ptr->hours;
  807.         }
  808.  
  809.         // check is current Overtime Hours is the new min and/or max
  810.         if (emp_ptr->overtimeHrs < emp_minMax_ptr->min_overtimeHrs)
  811.         {
  812.             emp_minMax_ptr->min_overtimeHrs = emp_ptr->overtimeHrs;
  813.         }
  814.  
  815.         if (emp_ptr->overtimeHrs > emp_minMax_ptr->max_overtimeHrs)
  816.         {
  817.             emp_minMax_ptr->max_overtimeHrs = emp_ptr->overtimeHrs;
  818.         }
  819.  
  820.         // check is current Gross Pay is the new min and/or max
  821.         if (emp_ptr->grossPay < emp_minMax_ptr->min_grossPay)
  822.         {
  823.             emp_minMax_ptr->min_grossPay = emp_ptr->grossPay;
  824.         }
  825.  
  826.         if (emp_ptr->grossPay > emp_minMax_ptr->max_grossPay)
  827.         {
  828.             emp_minMax_ptr->max_grossPay = emp_ptr->grossPay;
  829.         }
  830.  
  831.         // check is current State Tax is the new min and/or max
  832.         if (emp_ptr->stateTax < emp_minMax_ptr->min_stateTax)
  833.         {
  834.             emp_minMax_ptr->min_stateTax = emp_ptr->stateTax;
  835.         }
  836.  
  837.         if (emp_ptr->stateTax > emp_minMax_ptr->max_stateTax)
  838.         {
  839.             emp_minMax_ptr->max_stateTax = emp_ptr->stateTax;
  840.         }
  841.  
  842.         // check is current Federal Tax is the new min and/or max
  843.         if (emp_ptr->fedTax < emp_minMax_ptr->min_fedTax)
  844.         {
  845.             emp_minMax_ptr->min_fedTax = emp_ptr->fedTax;
  846.         }
  847.  
  848.         if (emp_ptr->fedTax > emp_minMax_ptr->max_fedTax)
  849.         {
  850.             emp_minMax_ptr->max_fedTax = emp_ptr->fedTax;
  851.         }
  852.  
  853.         // check is current Net Pay is the new min and/or max
  854.         if (emp_ptr->netPay < emp_minMax_ptr->min_netPay)
  855.         {
  856.             emp_minMax_ptr->min_netPay = emp_ptr->netPay;
  857.         }
  858.  
  859.         if (emp_ptr->netPay > emp_minMax_ptr->max_netPay)
  860.         {
  861.             emp_minMax_ptr->max_netPay = emp_ptr->netPay;
  862.         }
  863.  
  864.     } // else if
  865.  
  866.     // no need to return anything since we used pointers and have
  867.     // been referencing the employeeData structure and the 
  868.     // the employeeMinMax structure from its calling function ...
  869.     // this is the power of Call by Reference.
  870.  
  871. } // calcEmployeeMinMax
Success #stdin #stdout 0s 5288KB
comments (?)
stdin 
51.0   
42.5
37.0
45.0
40.0
stdout 
Enter hours worked by emp # 098401: 
Enter hours worked by emp # 526488: 
Enter hours worked by emp # 765349: 
Enter hours worked by emp # 034645: 
Enter hours worked by emp # 127615: 

*** Pay Calculator ***

---------------------------------------------------------------------------------
Name                Tax  Clock# Wage   Hours  OT   Gross   State  Fed      Net
                   State                           Pay     Tax    Tax      Pay
---------------------------------------------------------------------------------
Connie Cobol         MA  098401 10.60  51.0  11.0  598.90  29.95  149.73   419.23
Mary Apl             NH  526488  9.75  42.5   2.5  426.56   0.00  106.64   319.92
Frank Fortran        VT  765349 10.50  37.0   0.0  388.50  23.31   97.12   268.07
Jeff Ada             NY  034645 12.25  45.0   5.0  581.88  46.55  145.47   389.86
Anton Pascal         CA  127615  8.35  40.0   0.0  334.00  23.38   83.50   227.12
---------------------------------------------------------------------------------
Totals:                         51.45 215.5  18.5 2329.84 123.18  582.46  1624.19
Averages:                       10.29  43.1   3.7  465.97  24.64  116.49   324.84
Minimum:                         8.35  37.0   0.0  334.00   0.00   83.50   227.12
Maximum:                        12.25  51.0  11.0  598.90  46.55  149.73   419.23
https://ideone.com/8DRcHK
language:
C (gcc 8.3)
created:
11 days ago
visibility:
public

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