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  1. //********************************************************
  2. //
  3. // Assignment 8 - Structures and Strings and Pointers
  4. //
  5. // Name: Travis Bell
  6. //
  7. // Class: C Programming, Spring 2025
  8. //
  9. // Date: April 2, 2025
  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 * emp_ptr, int theSize);
  129. void calcGrossPay(struct employee * emp_ptr, int theSize);
  130. void calcStateTax(struct employee * emp_ptr, int theSize);
  131. void calcFedTax(struct employee * emp_ptr, int theSize);
  132. void calcNetPay(struct employee * emp_ptr, int theSize);
  133.  
  134. void printEmpStatistics (struct totals * emp_totals_ptr, struct min_max * emp_MinMax_ptr, 			int theSize);
  135.  
  136. int main ()
  137. {
  138.  
  139.     // Set up a local variable to store the employee information
  140.     // Initialize the name, tax state, clock number, and wage rate
  141.     struct employee employeeData[SIZE] = {
  142.         { {"Connie", "Cobol"}, "MA", 98401, 10.60},
  143.         { {"Mary", "Apl"}, "NH", 526488, 9.75 },
  144.         { {"Frank", "Fortran"}, "VT", 765349, 10.50 },
  145.         { {"Jeff", "Ada"}, "NY", 34645, 12.25 },
  146.         { {"Anton", "Pascal"},"CA",127615, 8.35 }
  147.     };
  148.  
  149.     // declare a pointer to the array of employee structures
  150.     struct employee * emp_ptr;
  151.  
  152.     // set the pointer to point to the array of employees
  153.     emp_ptr = employeeData;
  154.  
  155.     // set up structure to store totals and initialize all to zero
  156.     struct totals employeeTotals  = {0,0,0,0,0,0,0};
  157.  
  158.     // pointer to the employeeTotals structure
  159.     struct totals * emp_totals_ptr = &employeeTotals;
  160.  
  161.     // set up structure to store min and max values and initialize all to zero
  162.     struct min_max employeeMinMax = {0,0,0,0,0,0,0,0,0,0,0,0,0,0};
  163.  
  164.     // pointer to the employeeMinMax structure
  165.     struct min_max * emp_minMax_ptr = &employeeMinMax;
  166.  
  167.     // Call functions as needed to read and calculate information
  168.  
  169.     // Prompt for the number of hours worked by the employee 
  170.     getHours (employeeData, SIZE); 
  171.  
  172.     // Calculate the overtime hours
  173.     calcOvertimeHrs (employeeData, SIZE);
  174.  
  175.     // Calculate the weekly gross pay
  176.     calcGrossPay (employeeData, SIZE); 
  177.  
  178.     // Calculate the state tax                                       
  179.     calcStateTax (employeeData, SIZE);
  180.  
  181.     // Calculate the federal tax                                                   
  182.     calcFedTax (employeeData, SIZE);
  183.  
  184.     // Calculate the net pay after taxes   
  185.     calcNetPay (employeeData, SIZE); 
  186.  
  187.     // Keep a running sum of the employee totals
  188.     // Note the & to specify the address of the employeeTotals
  189.     // structure.  Needed since pointers work with addresses.
  190.     calcEmployeeTotals (employeeData, 
  191.                         &employeeTotals, 
  192.                         SIZE);
  193.  
  194.     // Keep a running update of the employee minimum and maximum values
  195.     calcEmployeeMinMax (employeeData, 
  196.                         &employeeMinMax,
  197.                         SIZE); 
  198.     // Print the column headers
  199.     printHeader();
  200.  
  201.     // print out final information on each employee
  202.     printEmp (employeeData, SIZE); 
  203.  
  204.     // TODO - Transition this call to using pointers.
  205.     //        Hint:  Pass the address of these two structures
  206.     //        like it is being done with calcEmployeeTotals
  207.     //        and calcEmployeeMinMax.
  208.  
  209.     // print the totals and averages for all float items
  210.     printEmpStatistics(&employeeTotals, &employeeMinMax, SIZE);
  211.  
  212.     return (0); // success
  213.  
  214. } // main
  215.  
  216. //**************************************************************
  217. // Function: getHours 
  218. // 
  219. // Purpose: Obtains input from user, the number of hours worked 
  220. //          per employee and updates it in the array of structures
  221. //          for each employee.
  222. // 
  223. // Parameters:
  224. //
  225. //   emp_ptr - pointer to array of employees (i.e., struct employee)
  226. //   theSize - the array size (i.e., number of employees)
  227. // 
  228. // Returns: void (the employee hours gets updated by reference)
  229. //  
  230. //**************************************************************
  231.  
  232. void getHours (struct employee * emp_ptr, int theSize) 
  233. { 
  234.  
  235.     int i;  // loop index
  236.  
  237.     // read in hours for each employee
  238.     for (i = 0; i < theSize; ++i)
  239.     {
  240.         // Read in hours for employee 
  241.         printf("\nEnter hours worked by emp # %06li: ", emp_ptr->clockNumber); 
  242.         scanf ("%f", &emp_ptr->hours); 
  243.  
  244.         // set pointer to next employee
  245.         ++emp_ptr;
  246.     }
  247.  
  248. } // getHours
  249.  
  250. //**************************************************************
  251. // Function: printHeader
  252. // 
  253. // Purpose: Prints the initial table header information.
  254. // 
  255. // Parameters: none
  256. // 
  257. // Returns: void
  258. //  
  259. //**************************************************************
  260.  
  261. void printHeader (void) 
  262. { 
  263.  
  264.     printf ("\n\n*** Pay Calculator ***\n");
  265.  
  266.     // print the table header
  267.     printf("\n--------------------------------------------------------------");
  268.     printf("-------------------");
  269.     printf("\nName                Tax  Clock# Wage   Hours  OT   Gross ");
  270.     printf("  State  Fed      Net");
  271.     printf("\n                   State                           Pay   ");
  272.     printf("  Tax    Tax      Pay");
  273.  
  274.     printf("\n--------------------------------------------------------------");
  275.     printf("-------------------");
  276.  
  277. } // printHeader
  278.  
  279. //************************************************************* 
  280. // Function: printEmp 
  281. // 
  282. // Purpose: Prints out all the information for each employee
  283. //          in a nice and orderly table format.
  284. // 
  285. // Parameters: 
  286. //
  287. //   emp_ptr - pointer to array of struct employee
  288. //   theSize - the array size (i.e., number of employees)
  289. // 
  290. // Returns: void
  291. //  
  292. //**************************************************************
  293.  
  294. void printEmp (struct employee * emp_ptr, int theSize)
  295. {
  296.  
  297.     int i;  // array and loop index
  298.  
  299.     // Used to format the employee name
  300.     char name [FIRST_NAME_SIZE + LAST_NAME_SIZE + 1];
  301.  
  302.     // read in hours for each employee
  303.     for (i = 0; i < theSize; ++i)
  304.     {
  305.         // While you could just print the first and last name in the printf
  306.         // statement that follows, you could also use various C string library
  307.         // functions to format the name exactly the way you want it.  Breaking
  308.         // the name into first and last members additionally gives you some 
  309.         // flexibility in printing.  This also becomes more useful if we decide
  310.         // later to store other parts of a person's name. I really did this just 
  311.         // to show you how to work with some of the common string functions.
  312.         strcpy (name, emp_ptr->empName.firstName);
  313.         strcat (name, " "); // add a space between first and last names
  314.         strcat (name, emp_ptr->empName.lastName);
  315.  
  316.         // Print out a single employee
  317.         printf("\n%-20.20s %-2.2s  %06li %5.2f  %4.1f  %4.1f %7.2f %6.2f %7.2f %8.2f",
  318.                name, emp_ptr->taxState, emp_ptr->clockNumber, 
  319.                emp_ptr->wageRate, emp_ptr->hours,
  320.                emp_ptr->overtimeHrs, emp_ptr->grossPay, 
  321.                emp_ptr->stateTax, emp_ptr->fedTax, 
  322.                emp_ptr->netPay);
  323.  
  324.         // set pointer to next employee
  325.         ++emp_ptr;
  326.  
  327.     } // for
  328.  
  329. } // printEmp
  330.  
  331. //************************************************************* 
  332. // Function: printEmpStatistics 
  333. // 
  334. // Purpose: Prints out the summary totals and averages of all 
  335. //          floating point value items for all employees
  336. //          that have been processed.  It also prints
  337. //          out the min and max values.
  338. // 
  339. // Parameters: 
  340. //
  341. //   employeeTotals - a structure containing a running total 
  342. //                    of all employee floating point items 
  343. //   employeeMinMax - a structure containing all the minimum 
  344. //                    and maximum values of all employee 
  345. //                    floating point items
  346. //   theSize - the total number of employees processed, used 
  347. //             to check for zero or negative divide condition.
  348. // 
  349. // Returns: void
  350. //  
  351. //**************************************************************
  352.  
  353. // TODO - Transition this function from Structure references to
  354. // Pointer references. Two steps are needed:
  355. //
  356. //     1) Change both structure parameters to pointers (use
  357. //     emp_totals_ptr and emp_MinMax_ptr).
  358. //
  359. //     2) Change all structures references to pointer references
  360. //     within all places inside the function body.
  361. //
  362. //     For example, instead of employeeTotals.total_wageRate
  363. //     ... use emp_totals_ptr->total_wageRate
  364. //     and instead of employeeMinMax.min_wageRate
  365. //     ... use emp_MinMax_ptr->min_wageRate
  366.  
  367. void printEmpStatistics (struct totals * emp_totals_ptr, struct min_max * emp_MinMax_ptr, int theSize)
  368. {
  369.  
  370.     // print a separator line
  371.     printf("\n--------------------------------------------------------------");
  372.     printf("-------------------");
  373.  
  374.     // print the totals for all the floating point fields
  375.     printf("\nTotals:                         %5.2f %5.1f %5.1f %7.2f %6.2f %7.2f %8.2f",
  376.            emp_totals_ptr->total_wageRate,
  377.            emp_totals_ptr->total_hours,
  378.            emp_totals_ptr->total_overtimeHrs,
  379.            emp_totals_ptr->total_grossPay,
  380.            emp_totals_ptr->total_stateTax,
  381.            emp_totals_ptr->total_fedTax,
  382.            emp_totals_ptr->total_netPay);
  383.  
  384.     // make sure you don't divide by zero or a negative number
  385.     if (theSize > 0)       
  386.     {
  387.         // print the averages for all the floating point fields
  388.         printf("\nAverages:                       %5.2f %5.1f %5.1f %7.2f %6.2f %7.2f %8.2f",
  389.                emp_totals_ptr->total_wageRate / theSize,
  390.                emp_totals_ptr->total_hours / theSize,
  391.                emp_totals_ptr->total_overtimeHrs / theSize,
  392.                emp_totals_ptr->total_grossPay / theSize,
  393.                emp_totals_ptr->total_stateTax / theSize,
  394.                emp_totals_ptr->total_fedTax / theSize,
  395.                emp_totals_ptr->total_netPay / theSize);
  396.     } // if
  397.  
  398.     // print the min and max values
  399.  
  400.     printf("\nMinimum:                        %5.2f %5.1f %5.1f %7.2f %6.2f %7.2f %8.2f",
  401.            emp_MinMax_ptr->min_wageRate,
  402.            emp_MinMax_ptr->min_hours,
  403.            emp_MinMax_ptr->min_overtimeHrs,
  404.            emp_MinMax_ptr->min_grossPay,
  405.            emp_MinMax_ptr->min_stateTax,
  406.            emp_MinMax_ptr->min_fedTax,
  407.            emp_MinMax_ptr->min_netPay);
  408.  
  409.     printf("\nMaximum:                        %5.2f %5.1f %5.1f %7.2f %6.2f %7.2f %8.2f",
  410.            emp_MinMax_ptr->max_wageRate,
  411.            emp_MinMax_ptr->max_hours,
  412.            emp_MinMax_ptr->max_overtimeHrs,
  413.            emp_MinMax_ptr->max_grossPay,
  414.            emp_MinMax_ptr->max_stateTax,
  415.            emp_MinMax_ptr->max_fedTax,
  416.            emp_MinMax_ptr->max_netPay);
  417.  
  418. }  // printEmpStatistics
  419.  
  420. //*************************************************************
  421. // Function: calcOvertimeHrs
  422. //
  423. // Purpose: Calculates the overtime hours worked by an employee
  424. //          in a given week for each employee.
  425. //
  426. // Parameters:
  427. //
  428. //   employeeData - array of employees (i.e., struct employee)
  429. //   theSize - the array size (i.e., number of employees)
  430. //
  431. // Returns: void (the overtime hours gets updated by reference)
  432. //
  433. //**************************************************************
  434.  
  435. // TODO - Transition this function from Array references to
  436. // Pointer references. Perform these three (3) steps:
  437. //
  438. //    1) Change the employeeData parameter to a pointer (emp_ptr)
  439. //    2) Change all array references in function body to pointer
  440. //       references (use emp_ptr).
  441. //    3) Increment emp_ptr just before the end of the loop
  442. //       to access the next employee
  443. //
  444. // Note: Review how it was done already in the getHours function
  445.  
  446. void calcOvertimeHrs (struct employee * emp_ptr, int theSize)
  447. {
  448.  
  449.     int i;  // array and loop index
  450.  
  451.     // calculate overtime hours for each employee
  452.     for (i = 0; i < theSize; ++i)
  453.     {   
  454.         emp_ptr->overtimeHrs = (emp_ptr->hours > STD_HOURS) ? 
  455. 	(emp_ptr->hours - STD_HOURS) : 0;
  456.         ++emp_ptr;
  457.  
  458.     } // for
  459.  
  460. }  // calcOvertimeHrs
  461.  
  462. //*************************************************************
  463. // Function: calcGrossPay
  464. //
  465. // Purpose: Calculates the gross pay based on the the normal pay
  466. //          and any overtime pay for a given week for each
  467. //          employee.
  468. //
  469. // Parameters:
  470. //
  471. //   employeeData - array of employees (i.e., struct employee)
  472. //   theSize - the array size (i.e., number of employees)
  473. //
  474. // Returns: void (the gross pay gets updated by reference)
  475. //
  476. //**************************************************************
  477.  
  478. // TODO - Transition this function from Array references to
  479. // Pointer references. Perform these three (3) steps:
  480. //
  481. //    1) Change the employeeData parameter to a pointer (emp_ptr)
  482. //    2) Change all array references in function body to pointer
  483. //       references (use emp_ptr).
  484. //    3) Increment emp_ptr just before the end of the loop
  485. //       to access the next employee
  486. //
  487. // Note: Review how it was done already in the getHours function
  488.  
  489. void calcGrossPay(struct employee * emp_ptr, int theSize)
  490. {
  491.     int i;                // loop and array index
  492.     float theNormalPay;   // normal pay without any overtime hours
  493.     float theOvertimePay; // overtime pay
  494.  
  495.     // calculate grossPay for each employee
  496.     for (i=0; i < theSize; ++i)
  497.     {
  498.         // calculate normal pay and any overtime pay
  499.         float normalPay = emp_ptr->wageRate * (emp_ptr->hours - emp_ptr->overtimeHrs);
  500.         float overtimePay = emp_ptr->overtimeHrs * emp_ptr->wageRate * OT_RATE;
  501.         emp_ptr->grossPay = normalPay + overtimePay;
  502.         ++emp_ptr;
  503.     }
  504.  
  505. } // calcGrossPay
  506.  
  507. //*************************************************************
  508. // Function: calcStateTax
  509. //
  510. // Purpose: Calculates the State Tax owed based on gross pay
  511. //          for each employee.  State tax rate is based on the 
  512. //          the designated tax state based on where the
  513. //          employee is actually performing the work.  Each
  514. //          state decides their tax rate.
  515. //
  516. // Parameters:
  517. //
  518. //   employeeData - array of employees (i.e., struct employee)
  519. //   theSize - the array size (i.e., number of employees)
  520. //
  521. // Returns: void (the state tax gets updated by reference)
  522. //
  523. //**************************************************************
  524.  
  525. // TODO - Transition this function from Array references to
  526. // Pointer references. Perform these three (3) steps:
  527. //
  528. //    1) Change the employeeData parameter to a pointer (emp_ptr)
  529. //    2) Change all array references in function body to pointer
  530. //       references (use emp_ptr).
  531. //    3) Increment emp_ptr just before the end of the loop
  532. //       to access the next employee
  533. //
  534. // Note: Review how it was done already in the getHours function
  535.  
  536. void calcStateTax(struct employee * emp_ptr, int theSize)
  537. {
  538.  
  539.     int i; // loop and array index
  540.  
  541.     // calculate state tax based on where employee works
  542.     for (i=0; i < theSize; ++i)
  543.     {
  544.         // Make sure tax state is all uppercase
  545.         emp_ptr->taxState[0] = toupper(emp_ptr->taxState[0]);
  546.         emp_ptr->taxState[1] = toupper(emp_ptr->taxState[1]);
  547.  
  548.         if (strcmp(emp_ptr->taxState, "MA") == 0)
  549.             emp_ptr->stateTax = emp_ptr->grossPay * MA_TAX_RATE;
  550.         else if (strcmp(emp_ptr->taxState, "VT") == 0)
  551.             emp_ptr->stateTax = emp_ptr->grossPay * VT_TAX_RATE;
  552.         else if (strcmp(emp_ptr->taxState, "NH") == 0)
  553.             emp_ptr->stateTax = emp_ptr->grossPay * NH_TAX_RATE;
  554.         else if (strcmp(emp_ptr->taxState, "CA") == 0)
  555.             emp_ptr->stateTax = emp_ptr->grossPay * CA_TAX_RATE;
  556.         else
  557.             emp_ptr->stateTax = emp_ptr->grossPay * DEFAULT_TAX_RATE;
  558.  
  559.         ++emp_ptr;
  560.     } // for
  561.  
  562. } // calcStateTax
  563.  
  564. //*************************************************************
  565. // Function: calcFedTax
  566. //
  567. // Purpose: Calculates the Federal Tax owed based on the gross 
  568. //          pay for each employee
  569. //
  570. // Parameters:
  571. //
  572. //   employeeData - array of employees (i.e., struct employee)
  573. //   theSize - the array size (i.e., number of employees)
  574. //
  575. // Returns: void (the federal tax gets updated by reference)
  576. //
  577. //**************************************************************
  578.  
  579. // TODO - Transition this function from Array references to
  580. // Pointer references. Perform these three (3) steps:
  581. //
  582. //    1) Change the employeeData parameter to a pointer (emp_ptr)
  583. //    2) Change all array references in function body to pointer
  584. //       references (use emp_ptr).
  585. //    3) Increment emp_ptr just before the end of the loop
  586. //       to access the next employee
  587. //
  588. // Note: Review how it was done already in the getHours function
  589.  
  590. void calcFedTax(struct employee * emp_ptr, int theSize)
  591. {
  592.  
  593.     int i;  // loop and array index
  594.  
  595.     // calculate the federal tax for each employee
  596.     for (i=0; i < theSize; ++i)
  597.     {
  598.         // Fed Tax is the same for all regardless of state
  599.         emp_ptr->fedTax = emp_ptr->grossPay * FED_TAX_RATE;
  600.         ++emp_ptr;
  601.  
  602.     } // for
  603.  
  604. } // calcFedTax
  605.  
  606. //*************************************************************
  607. // Function: calcNetPay
  608. //
  609. // Purpose: Calculates the net pay as the gross pay minus any
  610. //          state and federal taxes owed for each employee.
  611. //          Essentially, their "take home" pay.
  612. //
  613. // Parameters:
  614. //
  615. //   employeeData - array of employees (i.e., struct employee)
  616. //   theSize - the array size (i.e., number of employees)
  617. //
  618. // Returns: void (the net pay gets updated by reference)
  619. //
  620. //**************************************************************
  621.  
  622. // TODO - Transition this function from Array references to
  623. // Pointer references. Perform these three (3) steps:
  624. //
  625. //    1) Change the employeeData parameter to a pointer (emp_ptr)
  626. //    2) Change all array references in function body to pointer
  627. //       references (use emp_ptr).
  628. //    3) Increment emp_ptr just before the end of the loop
  629. //       to access the next employee
  630. //
  631. // Note: Review how it was done already in the getHours function
  632.  
  633. void calcNetPay(struct employee * emp_ptr, int theSize) 
  634. {
  635.     int i;               // loop and array index
  636.     float theTotalTaxes; // the total state and federal tax
  637.  
  638.     // calculate the take home pay for each employee
  639.     for (i=0; i < theSize; ++i)
  640.     {
  641.         // calculate the total state and federal taxes
  642.         emp_ptr->netPay = emp_ptr->grossPay - (emp_ptr->stateTax + emp_ptr->fedTax);
  643.         ++emp_ptr;
  644.  
  645.     } // for
  646.  
  647. } // calcNetPay
  648.  
  649. //*************************************************************
  650. // Function: calcEmployeeTotals
  651. //
  652. // Purpose: Performs a running total (sum) of each employee
  653. //          floating point member in the array of structures 
  654. //
  655. // Parameters:
  656. //
  657. //   emp_ptr - pointer to array of employees (structure)
  658. //   emp_totals_ptr - pointer to a structure containing the 
  659. //                    running totals of all floating point
  660. //                    members in the array of employee structure
  661. //                    that is accessed and referenced by emp_ptr
  662. //   theSize - the array size (i.e., number of employees)
  663. //
  664. // Returns: 
  665. //
  666. //   void (the employeeTotals structure gets updated by reference)
  667. //
  668. //**************************************************************
  669.  
  670. void calcEmployeeTotals (struct employee * emp_ptr,
  671.                          struct totals * emp_totals_ptr,
  672.                          int theSize)
  673. {
  674.  
  675.     int i; // loop index
  676.  
  677.     // total up each floating point item for all employees
  678.     for (i = 0; i < theSize; ++i)
  679.     {
  680.         // add current employee data to our running totals
  681.         emp_totals_ptr->total_wageRate += emp_ptr->wageRate;
  682.         emp_totals_ptr->total_hours += emp_ptr->hours;
  683.         emp_totals_ptr->total_overtimeHrs += emp_ptr->overtimeHrs;
  684.         emp_totals_ptr->total_grossPay += emp_ptr->grossPay;
  685.         emp_totals_ptr->total_stateTax += emp_ptr->stateTax;
  686.         emp_totals_ptr->total_fedTax += emp_ptr->fedTax;
  687.         emp_totals_ptr->total_netPay += emp_ptr->netPay;
  688.  
  689.         // go to next employee in our array of structures
  690.         // Note:  We don't need to increment the emp_totals_ptr
  691.         //        because it is not an array
  692.         ++emp_ptr;
  693.  
  694.     } // for
  695.  
  696.     // no need to return anything since we used pointers and have
  697.     // been referring the array of employee structure and the 
  698.     // the total structure from its calling function ... this
  699.     // is the power of Call by Reference.
  700.  
  701. } // calcEmployeeTotals
  702.  
  703. //*************************************************************
  704. // Function: calcEmployeeMinMax
  705. //
  706. // Purpose: Accepts various floating point values from an
  707. //          employee and adds to a running update of min
  708. //          and max values
  709. //
  710. // Parameters:
  711. //
  712. //   employeeData   - array of employees (i.e., struct employee)
  713. //   employeeTotals - structure containing a running totals 
  714. //                    of all fields above
  715. //   theSize - the array size (i.e., number of employees)
  716. //
  717. // Returns: 
  718. //
  719. //   employeeMinMax - updated employeeMinMax structure
  720. //
  721. //**************************************************************
  722.  
  723. void calcEmployeeMinMax (struct employee * emp_ptr,
  724.                          struct min_max * emp_minMax_ptr,
  725.                          int theSize)
  726. {
  727.  
  728.     int i; // loop index
  729.  
  730.     // At this point, emp_ptr is pointing to the first
  731.     // employee which is located in the first element
  732.     // of our employee array of structures (employeeData).
  733.  
  734.     // As this is the first employee, set each min 
  735.     // min and max value using our emp_minMax_ptr
  736.     // to the associated member fields below.  They
  737.     // will become the initial baseline that we  
  738.     // can check and update if needed against the 
  739.     // remaining employees.
  740.  
  741.     // set the min to the first employee members
  742.     emp_minMax_ptr->min_wageRate = emp_ptr->wageRate; 
  743.     emp_minMax_ptr->min_hours = emp_ptr->hours;
  744.     emp_minMax_ptr->min_overtimeHrs = emp_ptr->overtimeHrs; 
  745.     emp_minMax_ptr->min_grossPay = emp_ptr->grossPay;
  746.     emp_minMax_ptr->min_stateTax = emp_ptr->stateTax;
  747.     emp_minMax_ptr->min_fedTax = emp_ptr->fedTax;
  748.     emp_minMax_ptr->min_netPay = emp_ptr->netPay;
  749.  
  750.     // set the max to the first employee members
  751.     emp_minMax_ptr->max_wageRate = emp_ptr->wageRate; 
  752.     emp_minMax_ptr->max_hours = emp_ptr->hours;
  753.     emp_minMax_ptr->max_overtimeHrs = emp_ptr->overtimeHrs; 
  754.     emp_minMax_ptr->max_grossPay = emp_ptr->grossPay;
  755.     emp_minMax_ptr->max_stateTax = emp_ptr->stateTax;
  756.     emp_minMax_ptr->max_fedTax = emp_ptr->fedTax;
  757.     emp_minMax_ptr->max_netPay = emp_ptr->netPay;
  758.  
  759.     // compare the rest of the employees to each other for min and max
  760.     for (i = 1; i < theSize; ++i)
  761.     {
  762.  
  763.         // go to next employee in our array of structures
  764.         // Note:  We don't need to increment the emp_totals_ptr
  765.         //        because it is not an array
  766.         ++emp_ptr;
  767.  
  768.         // check if current Wage Rate is the new min and/or max
  769.         if (emp_ptr->wageRate < emp_minMax_ptr->min_wageRate)
  770.         {
  771.             emp_minMax_ptr->min_wageRate = emp_ptr->wageRate;
  772.         }
  773.  
  774.         if (emp_ptr->wageRate > emp_minMax_ptr->max_wageRate)
  775.         {
  776.             emp_minMax_ptr->max_wageRate = emp_ptr->wageRate;
  777.         }
  778.  
  779.         // check is current Hours is the new min and/or max
  780.         if (emp_ptr->hours < emp_minMax_ptr->min_hours)
  781.         {
  782.             emp_minMax_ptr->min_hours = emp_ptr->hours;
  783.         }
  784.  
  785.         if (emp_ptr->hours > emp_minMax_ptr->max_hours)
  786.         {
  787.             emp_minMax_ptr->max_hours = emp_ptr->hours;
  788.         }
  789.  
  790.         // check is current Overtime Hours is the new min and/or max
  791.         if (emp_ptr->overtimeHrs < emp_minMax_ptr->min_overtimeHrs)
  792.         {
  793.             emp_minMax_ptr->min_overtimeHrs = emp_ptr->overtimeHrs;
  794.         }
  795.  
  796.         if (emp_ptr->overtimeHrs > emp_minMax_ptr->max_overtimeHrs)
  797.         {
  798.             emp_minMax_ptr->max_overtimeHrs = emp_ptr->overtimeHrs;
  799.         }
  800.  
  801.         // check is current Gross Pay is the new min and/or max
  802.         if (emp_ptr->grossPay < emp_minMax_ptr->min_grossPay)
  803.         {
  804.             emp_minMax_ptr->min_grossPay = emp_ptr->grossPay;
  805.         }
  806.  
  807.         if (emp_ptr->grossPay > emp_minMax_ptr->max_grossPay)
  808.         {
  809.             emp_minMax_ptr->max_grossPay = emp_ptr->grossPay;
  810.         }
  811.  
  812.         // check is current State Tax is the new min and/or max
  813.         if (emp_ptr->stateTax < emp_minMax_ptr->min_stateTax)
  814.         {
  815.             emp_minMax_ptr->min_stateTax = emp_ptr->stateTax;
  816.         }
  817.  
  818.         if (emp_ptr->stateTax > emp_minMax_ptr->max_stateTax)
  819.         {
  820.             emp_minMax_ptr->max_stateTax = emp_ptr->stateTax;
  821.         }
  822.  
  823.         // check is current Federal Tax is the new min and/or max
  824.         if (emp_ptr->fedTax < emp_minMax_ptr->min_fedTax)
  825.         {
  826.             emp_minMax_ptr->min_fedTax = emp_ptr->fedTax;
  827.         }
  828.  
  829.         if (emp_ptr->fedTax > emp_minMax_ptr->max_fedTax)
  830.         {
  831.             emp_minMax_ptr->max_fedTax = emp_ptr->fedTax;
  832.         }
  833.  
  834.         // check is current Net Pay is the new min and/or max
  835.         if (emp_ptr->netPay < emp_minMax_ptr->min_netPay)
  836.         {
  837.             emp_minMax_ptr->min_netPay = emp_ptr->netPay;
  838.         }
  839.  
  840.         if (emp_ptr->netPay > emp_minMax_ptr->max_netPay)
  841.         {
  842.             emp_minMax_ptr->max_netPay = emp_ptr->netPay;
  843.         }
  844.  
  845.     } // else if
  846.  
  847.     // no need to return anything since we used pointers and have
  848.     // been referencing the employeeData structure and the 
  849.     // the employeeMinMax structure from its calling function ...
  850.     // this is the power of Call by Reference.
  851.  
  852. } // calcEmployeeMinMax
Success #stdin #stdout 0.01s 5284KB
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/eRV8FJ
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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