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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 employeeData for 
  126. // the first parameter). See prototypes above for hints.
  127.  
  128. void calcOvertimeHrs (struct employee employeeData[], int theSize);
  129. void calcGrossPay (struct employee employeeData[], int theSize);
  130. void calcStateTax (struct employee employeeData[], int theSize);
  131. void calcFedTax (struct employee employeeData[], int theSize);
  132. void calcNetPay (struct employee employeeData[], int theSize);
  133.  
  134. void printEmpStatistics (struct totals employeeTotals, 
  135.                          struct min_max employeeMinMax,
  136.                          int theSize);
  137.  
  138. int main ()
  139. {
  140.  
  141.     // Set up a local variable to store the employee information
  142.     // Initialize the name, tax state, clock number, and wage rate
  143.     struct employee employeeData[SIZE] = {
  144.         { {"Connie", "Cobol"}, "MA", 98401, 10.60},
  145.         { {"Mary", "Apl"}, "NH", 526488, 9.75 },
  146.         { {"Frank", "Fortran"}, "VT", 765349, 10.50 },
  147.         { {"Jeff", "Ada"}, "NY", 34645, 12.25 },
  148.         { {"Anton", "Pascal"},"CA",127615, 8.35 }
  149.     };
  150.  
  151.     // declare a pointer to the array of employee structures
  152.     struct employee * emp_ptr;
  153.  
  154.     // set the pointer to point to the array of employees
  155.     emp_ptr = employeeData;
  156.  
  157.     // set up structure to store totals and initialize all to zero
  158.     struct totals employeeTotals  = {0,0,0,0,0,0,0};
  159.  
  160.     // pointer to the employeeTotals structure
  161.     struct totals * emp_totals_ptr = &employeeTotals;
  162.  
  163.     // set up structure to store min and max values and initialize all to zero
  164.     struct min_max employeeMinMax = {0,0,0,0,0,0,0,0,0,0,0,0,0,0};
  165.  
  166.     // pointer to the employeeMinMax structure
  167.     struct min_max * emp_minMax_ptr = &employeeMinMax;
  168.  
  169.     // Call functions as needed to read and calculate information
  170.  
  171.     // Prompt for the number of hours worked by the employee 
  172.     getHours (employeeData, SIZE); 
  173.  
  174.     // Calculate the overtime hours
  175.     calcOvertimeHrs (employeeData, SIZE);
  176.  
  177.     // Calculate the weekly gross pay
  178.     calcGrossPay (employeeData, SIZE); 
  179.  
  180.     // Calculate the state tax                                       
  181.     calcStateTax (employeeData, SIZE);
  182.  
  183.     // Calculate the federal tax                                                   
  184.     calcFedTax (employeeData, SIZE);
  185.  
  186.     // Calculate the net pay after taxes   
  187.     calcNetPay (employeeData, SIZE); 
  188.  
  189.     // Keep a running sum of the employee totals
  190.     // Note the & to specify the address of the employeeTotals
  191.     // structure.  Needed since pointers work with addresses.
  192.     calcEmployeeTotals (employeeData, 
  193.                         &employeeTotals, 
  194.                         SIZE);
  195.  
  196.     // Keep a running update of the employee minimum and maximum values
  197.     calcEmployeeMinMax (employeeData, 
  198.                         &employeeMinMax,
  199.                         SIZE); 
  200.     // Print the column headers
  201.     printHeader();
  202.  
  203.     // print out final information on each employee
  204.     printEmp (employeeData, SIZE); 
  205.  
  206.     // TODO - Transition this call to using pointers.
  207.     //        Hint:  Pass the address of these two structures
  208.     //        like it is being done with calcEmployeeTotals
  209.     //        and calcEmployeeMinMax.
  210.  
  211.     // print the totals and averages for all float items
  212.     printEmpStatistics (employeeTotals, 
  213.                         employeeMinMax, 
  214.                         SIZE);
  215.  
  216.     return (0); // success
  217.  
  218. } // main
  219.  
  220. //**************************************************************
  221. // Function: getHours 
  222. // 
  223. // Purpose: Obtains input from user, the number of hours worked 
  224. //          per employee and updates it in the array of structures
  225. //          for each employee.
  226. // 
  227. // Parameters:
  228. //
  229. //   emp_ptr - pointer to array of employees (i.e., struct employee)
  230. //   theSize - the array size (i.e., number of employees)
  231. // 
  232. // Returns: void (the employee hours gets updated by reference)
  233. //  
  234. //**************************************************************
  235.  
  236. void getHours (struct employee * emp_ptr, int theSize) 
  237. { 
  238.  
  239.     int i;  // loop index
  240.  
  241.     // read in hours for each employee
  242.     for (i = 0; i < theSize; ++i)
  243.     {
  244.         // Read in hours for employee 
  245.         printf("\nEnter hours worked by emp # %06li: ", emp_ptr->clockNumber); 
  246.         scanf ("%f", &emp_ptr->hours); 
  247.  
  248.         // set pointer to next employee
  249.         ++emp_ptr;
  250.     }
  251.  
  252. } // getHours
  253.  
  254. //**************************************************************
  255. // Function: printHeader
  256. // 
  257. // Purpose: Prints the initial table header information.
  258. // 
  259. // Parameters: none
  260. // 
  261. // Returns: void
  262. //  
  263. //**************************************************************
  264.  
  265. void printHeader (void) 
  266. { 
  267.  
  268.     printf ("\n\n*** Pay Calculator ***\n");
  269.  
  270.     // print the table header
  271.     printf("\n--------------------------------------------------------------");
  272.     printf("-------------------");
  273.     printf("\nName                Tax  Clock# Wage   Hours  OT   Gross ");
  274.     printf("  State  Fed      Net");
  275.     printf("\n                   State                           Pay   ");
  276.     printf("  Tax    Tax      Pay");
  277.  
  278.     printf("\n--------------------------------------------------------------");
  279.     printf("-------------------");
  280.  
  281. } // printHeader
  282.  
  283. //************************************************************* 
  284. // Function: printEmp 
  285. // 
  286. // Purpose: Prints out all the information for each employee
  287. //          in a nice and orderly table format.
  288. // 
  289. // Parameters: 
  290. //
  291. //   emp_ptr - pointer to array of struct employee
  292. //   theSize - the array size (i.e., number of employees)
  293. // 
  294. // Returns: void
  295. //  
  296. //**************************************************************
  297.  
  298. void printEmp (struct employee * emp_ptr, int theSize)
  299. {
  300.  
  301.     int i;  // array and loop index
  302.  
  303.     // Used to format the employee name
  304.     char name [FIRST_NAME_SIZE + LAST_NAME_SIZE + 1];
  305.  
  306.     // read in hours for each employee
  307.     for (i = 0; i < theSize; ++i)
  308.     {
  309.         // While you could just print the first and last name in the printf
  310.         // statement that follows, you could also use various C string library
  311.         // functions to format the name exactly the way you want it.  Breaking
  312.         // the name into first and last members additionally gives you some 
  313.         // flexibility in printing.  This also becomes more useful if we decide
  314.         // later to store other parts of a person's name. I really did this just 
  315.         // to show you how to work with some of the common string functions.
  316.         strcpy (name, emp_ptr->empName.firstName);
  317.         strcat (name, " "); // add a space between first and last names
  318.         strcat (name, emp_ptr->empName.lastName);
  319.  
  320.         // Print out a single employee
  321.         printf("\n%-20.20s %-2.2s  %06li %5.2f  %4.1f  %4.1f %7.2f %6.2f %7.2f %8.2f",
  322.                name, emp_ptr->taxState, emp_ptr->clockNumber, 
  323.                emp_ptr->wageRate, emp_ptr->hours,
  324.                emp_ptr->overtimeHrs, emp_ptr->grossPay, 
  325.                emp_ptr->stateTax, emp_ptr->fedTax, 
  326.                emp_ptr->netPay);
  327.  
  328.         // set pointer to next employee
  329.         ++emp_ptr;
  330.  
  331.     } // for
  332.  
  333. } // printEmp
  334.  
  335. //************************************************************* 
  336. // Function: printEmpStatistics 
  337. // 
  338. // Purpose: Prints out the summary totals and averages of all 
  339. //          floating point value items for all employees
  340. //          that have been processed.  It also prints
  341. //          out the min and max values.
  342. // 
  343. // Parameters: 
  344. //
  345. //   employeeTotals - a structure containing a running total 
  346. //                    of all employee floating point items 
  347. //   employeeMinMax - a structure containing all the minimum 
  348. //                    and maximum values of all employee 
  349. //                    floating point items
  350. //   theSize - the total number of employees processed, used 
  351. //             to check for zero or negative divide condition.
  352. // 
  353. // Returns: void
  354. //  
  355. //**************************************************************
  356.  
  357. // TODO - Transition this function from Structure references to
  358. // Pointer references. Two steps are needed:
  359. //
  360. //     1) Change both structure parameters to pointers (use
  361. //     emp_totals_ptr and emp_MinMax_ptr).
  362. //
  363. //     2) Change all structures references to pointer references
  364. //     within all places inside the function body.
  365. //
  366. //     For example, instead of employeeTotals.total_wageRate
  367. //     ... use emp_totals_ptr->total_wageRate
  368. //     and instead of employeeMinMax.min_wageRate
  369. //     ... use emp_MinMax_ptr->min_wageRate
  370.  
  371. void printEmpStatistics (struct totals employeeTotals, 
  372.                          struct min_max employeeMinMax,
  373.                          int theSize)
  374. {
  375.  
  376.     // print a separator line
  377.     printf("\n--------------------------------------------------------------");
  378.     printf("-------------------");
  379.  
  380.     // print the totals for all the floating point fields
  381.     printf("\nTotals:                         %5.2f %5.1f %5.1f %7.2f %6.2f %7.2f %8.2f",
  382.            employeeTotals.total_wageRate,
  383.            employeeTotals.total_hours,
  384.            employeeTotals.total_overtimeHrs,
  385.            employeeTotals.total_grossPay,
  386.            employeeTotals.total_stateTax,
  387.            employeeTotals.total_fedTax,
  388.            employeeTotals.total_netPay);
  389.  
  390.     // make sure you don't divide by zero or a negative number
  391.     if (theSize > 0)       
  392.     {
  393.         // print the averages for all the floating point fields
  394.         printf("\nAverages:                       %5.2f %5.1f %5.1f %7.2f %6.2f %7.2f %8.2f",
  395.                employeeTotals.total_wageRate/theSize,
  396.                employeeTotals.total_hours/theSize,
  397.                employeeTotals.total_overtimeHrs/theSize,
  398.                employeeTotals.total_grossPay/theSize,
  399.                employeeTotals.total_stateTax/theSize,
  400.                employeeTotals.total_fedTax/theSize,
  401.                employeeTotals.total_netPay/theSize);
  402.     } // if
  403.  
  404.     // print the min and max values
  405.  
  406.     printf("\nMinimum:                        %5.2f %5.1f %5.1f %7.2f %6.2f %7.2f %8.2f",
  407.            employeeMinMax.min_wageRate,
  408.            employeeMinMax.min_hours,
  409.            employeeMinMax.min_overtimeHrs,
  410.            employeeMinMax.min_grossPay,
  411.            employeeMinMax.min_stateTax,
  412.            employeeMinMax.min_fedTax,
  413.            employeeMinMax.min_netPay);
  414.  
  415.     printf("\nMaximum:                        %5.2f %5.1f %5.1f %7.2f %6.2f %7.2f %8.2f",
  416.            employeeMinMax.max_wageRate,
  417.            employeeMinMax.max_hours,
  418.            employeeMinMax.max_overtimeHrs,
  419.            employeeMinMax.max_grossPay,
  420.            employeeMinMax.max_stateTax,
  421.            employeeMinMax.max_fedTax,
  422.            employeeMinMax.max_netPay);
  423.  
  424. }  // printEmpStatistics
  425.  
  426. //*************************************************************
  427. // Function: calcOvertimeHrs
  428. //
  429. // Purpose: Calculates the overtime hours worked by an employee
  430. //          in a given week for each employee.
  431. //
  432. // Parameters:
  433. //
  434. //   employeeData - array of employees (i.e., struct employee)
  435. //   theSize - the array size (i.e., number of employees)
  436. //
  437. // Returns: void (the overtime hours gets updated by reference)
  438. //
  439. //**************************************************************
  440.  
  441. // TODO - Transition this function from Array references to
  442. // Pointer references. Perform these three (3) steps:
  443. //
  444. //    1) Change the employeeData parameter to a pointer (emp_ptr)
  445. //    2) Change all array references in function body to pointer
  446. //       references (use emp_ptr).
  447. //    3) Increment emp_ptr just before the end of the loop
  448. //       to access the next employee
  449. //
  450. // Note: Review how it was done already in the getHours function
  451.  
  452. void calcOvertimeHrs (struct employee employeeData[], int theSize)
  453. {
  454.  
  455.     int i;  // array and loop index
  456.  
  457.     // calculate overtime hours for each employee
  458.     for (i = 0; i < theSize; ++i)
  459.     {  
  460.         // Any overtime ?
  461.         if (employeeData[i].hours >= STD_HOURS)
  462.         {
  463.             employeeData[i].overtimeHrs = employeeData[i].hours - STD_HOURS;
  464.         }
  465.         else // no overtime
  466.         {
  467.               employeeData[i].overtimeHrs = 0;
  468.         }
  469.  
  470.     } // for
  471.  
  472. }  // calcOvertimeHrs
  473.  
  474. //*************************************************************
  475. // Function: calcGrossPay
  476. //
  477. // Purpose: Calculates the gross pay based on the the normal pay
  478. //          and any overtime pay for a given week for each
  479. //          employee.
  480. //
  481. // Parameters:
  482. //
  483. //   employeeData - array of employees (i.e., struct employee)
  484. //   theSize - the array size (i.e., number of employees)
  485. //
  486. // Returns: void (the gross pay gets updated by reference)
  487. //
  488. //**************************************************************
  489.  
  490. // TODO - Transition this function from Array references to
  491. // Pointer references. Perform these three (3) steps:
  492. //
  493. //    1) Change the employeeData parameter to a pointer (emp_ptr)
  494. //    2) Change all array references in function body to pointer
  495. //       references (use emp_ptr).
  496. //    3) Increment emp_ptr just before the end of the loop
  497. //       to access the next employee
  498. //
  499. // Note: Review how it was done already in the getHours function
  500.  
  501. void calcGrossPay (struct employee employeeData[], int theSize)
  502. {
  503.     int i;                // loop and array index
  504.     float theNormalPay;   // normal pay without any overtime hours
  505.     float theOvertimePay; // overtime pay
  506.  
  507.     // calculate grossPay for each employee
  508.     for (i=0; i < theSize; ++i)
  509.     {
  510.         // calculate normal pay and any overtime pay
  511.         theNormalPay = employeeData[i].wageRate * 
  512.                        (employeeData[i].hours - employeeData[i].overtimeHrs);
  513.         theOvertimePay = employeeData[i].overtimeHrs * 
  514.                          (OT_RATE * employeeData[i].wageRate);
  515.  
  516.         // calculate gross pay for employee as normalPay + any overtime pay
  517.         employeeData[i].grossPay = theNormalPay + theOvertimePay;
  518.     }
  519.  
  520. } // calcGrossPay
  521.  
  522. //*************************************************************
  523. // Function: calcStateTax
  524. //
  525. // Purpose: Calculates the State Tax owed based on gross pay
  526. //          for each employee.  State tax rate is based on the 
  527. //          the designated tax state based on where the
  528. //          employee is actually performing the work.  Each
  529. //          state decides their tax rate.
  530. //
  531. // Parameters:
  532. //
  533. //   employeeData - array of employees (i.e., struct employee)
  534. //   theSize - the array size (i.e., number of employees)
  535. //
  536. // Returns: void (the state tax gets updated by reference)
  537. //
  538. //**************************************************************
  539.  
  540. // TODO - Transition this function from Array references to
  541. // Pointer references. Perform these three (3) steps:
  542. //
  543. //    1) Change the employeeData parameter to a pointer (emp_ptr)
  544. //    2) Change all array references in function body to pointer
  545. //       references (use emp_ptr).
  546. //    3) Increment emp_ptr just before the end of the loop
  547. //       to access the next employee
  548. //
  549. // Note: Review how it was done already in the getHours function
  550.  
  551. void calcStateTax (struct employee employeeData[], int theSize)
  552. {
  553.  
  554.     int i; // loop and array index
  555.  
  556.     // calculate state tax based on where employee works
  557.     for (i=0; i < theSize; ++i)
  558.     {
  559.         // Make sure tax state is all uppercase
  560.         if (islower(employeeData[i].taxState[0]))
  561.             employeeData[i].taxState[0] = toupper(employeeData[i].taxState[0]);
  562.         if (islower(employeeData[i].taxState[1]))
  563.             employeeData[i].taxState[1] = toupper(employeeData[i].taxState[1]);
  564.  
  565.         // calculate state tax based on where employee resides
  566.         if (strcmp(employeeData[i].taxState, "MA") == 0)
  567.             employeeData[i].stateTax = employeeData[i].grossPay * MA_TAX_RATE;
  568.         else if (strcmp(employeeData[i].taxState, "VT") == 0)
  569.             employeeData[i].stateTax = employeeData[i].grossPay * VT_TAX_RATE;
  570.         else if (strcmp(employeeData[i].taxState, "NH") == 0)
  571.             employeeData[i].stateTax = employeeData[i].grossPay * NH_TAX_RATE;
  572.         else if (strcmp(employeeData[i].taxState, "CA") == 0)
  573.             employeeData[i].stateTax = employeeData[i].grossPay * CA_TAX_RATE;
  574.         else
  575.             // any other state is the default rate
  576.             employeeData[i].stateTax = employeeData[i].grossPay * DEFAULT_TAX_RATE;
  577.     } // for
  578.  
  579. } // calcStateTax
  580.  
  581. //*************************************************************
  582. // Function: calcFedTax
  583. //
  584. // Purpose: Calculates the Federal Tax owed based on the gross 
  585. //          pay for each employee
  586. //
  587. // Parameters:
  588. //
  589. //   employeeData - array of employees (i.e., struct employee)
  590. //   theSize - the array size (i.e., number of employees)
  591. //
  592. // Returns: void (the federal tax gets updated by reference)
  593. //
  594. //**************************************************************
  595.  
  596. // TODO - Transition this function from Array references to
  597. // Pointer references. Perform these three (3) steps:
  598. //
  599. //    1) Change the employeeData parameter to a pointer (emp_ptr)
  600. //    2) Change all array references in function body to pointer
  601. //       references (use emp_ptr).
  602. //    3) Increment emp_ptr just before the end of the loop
  603. //       to access the next employee
  604. //
  605. // Note: Review how it was done already in the getHours function
  606.  
  607. void calcFedTax (struct employee employeeData[], int theSize)
  608. {
  609.  
  610.     int i;  // loop and array index
  611.  
  612.     // calculate the federal tax for each employee
  613.     for (i=0; i < theSize; ++i)
  614.     {
  615.         // Fed Tax is the same for all regardless of state
  616.         employeeData[i].fedTax = employeeData[i].grossPay * FED_TAX_RATE;
  617.  
  618.     } // for
  619.  
  620. } // calcFedTax
  621.  
  622. //*************************************************************
  623. // Function: calcNetPay
  624. //
  625. // Purpose: Calculates the net pay as the gross pay minus any
  626. //          state and federal taxes owed for each employee.
  627. //          Essentially, their "take home" pay.
  628. //
  629. // Parameters:
  630. //
  631. //   employeeData - array of employees (i.e., struct employee)
  632. //   theSize - the array size (i.e., number of employees)
  633. //
  634. // Returns: void (the net pay gets updated by reference)
  635. //
  636. //**************************************************************
  637.  
  638. // TODO - Transition this function from Array references to
  639. // Pointer references. Perform these three (3) steps:
  640. //
  641. //    1) Change the employeeData parameter to a pointer (emp_ptr)
  642. //    2) Change all array references in function body to pointer
  643. //       references (use emp_ptr).
  644. //    3) Increment emp_ptr just before the end of the loop
  645. //       to access the next employee
  646. //
  647. // Note: Review how it was done already in the getHours function
  648.  
  649. void calcNetPay (struct employee employeeData[], int theSize)
  650. {
  651.     int i;               // loop and array index
  652.     float theTotalTaxes; // the total state and federal tax
  653.  
  654.     // calculate the take home pay for each employee
  655.     for (i=0; i < theSize; ++i)
  656.     {
  657.         // calculate the total state and federal taxes
  658.         theTotalTaxes = employeeData[i].stateTax + employeeData[i].fedTax;
  659.  
  660.         // calculate the net pay
  661.         employeeData[i].netPay = employeeData[i].grossPay - theTotalTaxes;
  662.  
  663.     } // for
  664.  
  665. } // calcNetPay
  666.  
  667. //*************************************************************
  668. // Function: calcEmployeeTotals
  669. //
  670. // Purpose: Performs a running total (sum) of each employee
  671. //          floating point member in the array of structures 
  672. //
  673. // Parameters:
  674. //
  675. //   emp_ptr - pointer to array of employees (structure)
  676. //   emp_totals_ptr - pointer to a structure containing the 
  677. //                    running totals of all floating point
  678. //                    members in the array of employee structure
  679. //                    that is accessed and referenced by emp_ptr
  680. //   theSize - the array size (i.e., number of employees)
  681. //
  682. // Returns: 
  683. //
  684. //   void (the employeeTotals structure gets updated by reference)
  685. //
  686. //**************************************************************
  687.  
  688. void calcEmployeeTotals (struct employee * emp_ptr,
  689.                          struct totals * emp_totals_ptr,
  690.                          int theSize)
  691. {
  692.  
  693.     int i; // loop index
  694.  
  695.     // total up each floating point item for all employees
  696.     for (i = 0; i < theSize; ++i)
  697.     {
  698.         // add current employee data to our running totals
  699.         emp_totals_ptr->total_wageRate += emp_ptr->wageRate;
  700.         emp_totals_ptr->total_hours += emp_ptr->hours;
  701.         emp_totals_ptr->total_overtimeHrs += emp_ptr->overtimeHrs;
  702.         emp_totals_ptr->total_grossPay += emp_ptr->grossPay;
  703.         emp_totals_ptr->total_stateTax += emp_ptr->stateTax;
  704.         emp_totals_ptr->total_fedTax += emp_ptr->fedTax;
  705.         emp_totals_ptr->total_netPay += emp_ptr->netPay;
  706.  
  707.         // go to next employee in our array of structures
  708.         // Note:  We don't need to increment the emp_totals_ptr
  709.         //        because it is not an array
  710.         ++emp_ptr;
  711.  
  712.     } // for
  713.  
  714.     // no need to return anything since we used pointers and have
  715.     // been referring the array of employee structure and the 
  716.     // the total structure from its calling function ... this
  717.     // is the power of Call by Reference.
  718.  
  719. } // calcEmployeeTotals
  720.  
  721. //*************************************************************
  722. // Function: calcEmployeeMinMax
  723. //
  724. // Purpose: Accepts various floating point values from an
  725. //          employee and adds to a running update of min
  726. //          and max values
  727. //
  728. // Parameters:
  729. //
  730. //   employeeData   - array of employees (i.e., struct employee)
  731. //   employeeTotals - structure containing a running totals 
  732. //                    of all fields above
  733. //   theSize - the array size (i.e., number of employees)
  734. //
  735. // Returns: 
  736. //
  737. //   employeeMinMax - updated employeeMinMax structure
  738. //
  739. //**************************************************************
  740.  
  741. void calcEmployeeMinMax (struct employee * emp_ptr,
  742.                          struct min_max * emp_minMax_ptr,
  743.                          int theSize)
  744. {
  745.  
  746.     int i; // loop index
  747.  
  748.     // At this point, emp_ptr is pointing to the first
  749.     // employee which is located in the first element
  750.     // of our employee array of structures (employeeData).
  751.  
  752.     // As this is the first employee, set each min 
  753.     // min and max value using our emp_minMax_ptr
  754.     // to the associated member fields below.  They
  755.     // will become the initial baseline that we  
  756.     // can check and update if needed against the 
  757.     // remaining employees.
  758.  
  759.     // set the min to the first employee members
  760.     emp_minMax_ptr->min_wageRate = emp_ptr->wageRate; 
  761.     emp_minMax_ptr->min_hours = emp_ptr->hours;
  762.     emp_minMax_ptr->min_overtimeHrs = emp_ptr->overtimeHrs; 
  763.     emp_minMax_ptr->min_grossPay = emp_ptr->grossPay;
  764.     emp_minMax_ptr->min_stateTax = emp_ptr->stateTax;
  765.     emp_minMax_ptr->min_fedTax = emp_ptr->fedTax;
  766.     emp_minMax_ptr->min_netPay = emp_ptr->netPay;
  767.  
  768.     // set the max to the first employee members
  769.     emp_minMax_ptr->max_wageRate = emp_ptr->wageRate; 
  770.     emp_minMax_ptr->max_hours = emp_ptr->hours;
  771.     emp_minMax_ptr->max_overtimeHrs = emp_ptr->overtimeHrs; 
  772.     emp_minMax_ptr->max_grossPay = emp_ptr->grossPay;
  773.     emp_minMax_ptr->max_stateTax = emp_ptr->stateTax;
  774.     emp_minMax_ptr->max_fedTax = emp_ptr->fedTax;
  775.     emp_minMax_ptr->max_netPay = emp_ptr->netPay;
  776.  
  777.     // compare the rest of the employees to each other for min and max
  778.     for (i = 1; i < theSize; ++i)
  779.     {
  780.  
  781.         // go to next employee in our array of structures
  782.         // Note:  We don't need to increment the emp_totals_ptr
  783.         //        because it is not an array
  784.         ++emp_ptr;
  785.  
  786.         // check if current Wage Rate is the new min and/or max
  787.         if (emp_ptr->wageRate < emp_minMax_ptr->min_wageRate)
  788.         {
  789.             emp_minMax_ptr->min_wageRate = emp_ptr->wageRate;
  790.         }
  791.  
  792.         if (emp_ptr->wageRate > emp_minMax_ptr->max_wageRate)
  793.         {
  794.             emp_minMax_ptr->max_wageRate = emp_ptr->wageRate;
  795.         }
  796.  
  797.         // check is current Hours is the new min and/or max
  798.         if (emp_ptr->hours < emp_minMax_ptr->min_hours)
  799.         {
  800.             emp_minMax_ptr->min_hours = emp_ptr->hours;
  801.         }
  802.  
  803.         if (emp_ptr->hours > emp_minMax_ptr->max_hours)
  804.         {
  805.             emp_minMax_ptr->max_hours = emp_ptr->hours;
  806.         }
  807.  
  808.         // check is current Overtime Hours is the new min and/or max
  809.         if (emp_ptr->overtimeHrs < emp_minMax_ptr->min_overtimeHrs)
  810.         {
  811.             emp_minMax_ptr->min_overtimeHrs = emp_ptr->overtimeHrs;
  812.         }
  813.  
  814.         if (emp_ptr->overtimeHrs > emp_minMax_ptr->max_overtimeHrs)
  815.         {
  816.             emp_minMax_ptr->max_overtimeHrs = emp_ptr->overtimeHrs;
  817.         }
  818.  
  819.         // check is current Gross Pay is the new min and/or max
  820.         if (emp_ptr->grossPay < emp_minMax_ptr->min_grossPay)
  821.         {
  822.             emp_minMax_ptr->min_grossPay = emp_ptr->grossPay;
  823.         }
  824.  
  825.         if (emp_ptr->grossPay > emp_minMax_ptr->max_grossPay)
  826.         {
  827.             emp_minMax_ptr->max_grossPay = emp_ptr->grossPay;
  828.         }
  829.  
  830.         // check is current State Tax is the new min and/or max
  831.         if (emp_ptr->stateTax < emp_minMax_ptr->min_stateTax)
  832.         {
  833.             emp_minMax_ptr->min_stateTax = emp_ptr->stateTax;
  834.         }
  835.  
  836.         if (emp_ptr->stateTax > emp_minMax_ptr->max_stateTax)
  837.         {
  838.             emp_minMax_ptr->max_stateTax = emp_ptr->stateTax;
  839.         }
  840.  
  841.         // check is current Federal Tax is the new min and/or max
  842.         if (emp_ptr->fedTax < emp_minMax_ptr->min_fedTax)
  843.         {
  844.             emp_minMax_ptr->min_fedTax = emp_ptr->fedTax;
  845.         }
  846.  
  847.         if (emp_ptr->fedTax > emp_minMax_ptr->max_fedTax)
  848.         {
  849.             emp_minMax_ptr->max_fedTax = emp_ptr->fedTax;
  850.         }
  851.  
  852.         // check is current Net Pay is the new min and/or max
  853.         if (emp_ptr->netPay < emp_minMax_ptr->min_netPay)
  854.         {
  855.             emp_minMax_ptr->min_netPay = emp_ptr->netPay;
  856.         }
  857.  
  858.         if (emp_ptr->netPay > emp_minMax_ptr->max_netPay)
  859.         {
  860.             emp_minMax_ptr->max_netPay = emp_ptr->netPay;
  861.         }
  862.  
  863.     } // else if
  864.  
  865.     // no need to return anything since we used pointers and have
  866.     // been referencing the employeeData structure and the 
  867.     // the employeeMinMax structure from its calling function ...
  868.     // this is the power of Call by Reference.
  869.  
  870. } // calcEmployeeMinMax
Success #stdin #stdout 0s 5280KB
comments (?)
stdin
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51.0
42.5
37.0
45.0
40.0
stdout
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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/1w99NL
language:
C (gcc 8.3)
created:
4 days ago
visibility:
public

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