//********************************************************
//
// Assignment 5 - Functions
//
// Name: Amanda Connors
//
// Class: C Programming, Fall 2026
//
// Date: 10/14/2026
//
// Description: Program which determines overtime and 
// gross pay for a set of employees with outputs sent 
// to standard output (the screen).
//
// All functions are called by value
//
//********************************************************

#include <stdio.h>

// constants
#define SIZE 5
#define OVERTIME_RATE 1.5f
#define STD_WORK_WEEK 40.0f

// function prototypes
float getHours (long int clockNumber);
void printHeader (void);
void printEmp  (long int clockNumber, float wageRate, float hours,
                float overtimeHrs, float grossPay);

// TODO:  Add other function prototypes here as needed
float calcOvertimeHrs (float hours);
float calcGrossPay (float overtimeHrs, float hours, float wageRate);

int main()
{

    /* Variable Declarations */

    long  int clockNumber[SIZE] = {98401,526488,765349,34645,127615}; // ID
    float grossPay[SIZE];     // gross pay
    float hours[SIZE];        // hours worked in a given week
    int   i;                  // loop and array index
    float overtimeHrs[SIZE];  // overtime hours
    float wageRate[SIZE] = {10.60,9.75,10.50,12.25,8.35}; // hourly wage rate

    // process each employee
    for (i = 0; i < SIZE; ++i)
    {

        // Read in hours for employee
        hours[i] = getHours (clockNumber[i]); 

        // TODO: Function call to calculate overtime hours
		
		overtimeHrs[i] = calcOvertimeHrs (hours[i]);
		
        // TODO: Function call to calculate gross pay
		
		grossPay[i] = calcGrossPay (overtimeHrs[i], hours[i], wageRate[i]);
    }

    // print the header info
    printHeader();

    // print out each employee
    for (i = 0; i < SIZE; ++i)
    {

        // Print all the employees - call by value
        printEmp (clockNumber[i], wageRate[i], hours[i],
                   overtimeHrs[i], grossPay[i]);

    } // for

    return (0);

} // main

//**************************************************************
// Function: getHours 
// 
// Purpose: Obtains input from user, the number of hours worked 
// per employee and stores the result in a local variable 
// that is passed back to the calling function. 
// 
// Parameters: clockNumber - The unique employee ID
// 
// Returns: hoursWorked - hours worked in a given week
//  
//**************************************************************

float getHours (long int clockNumber) 
{ 

    float hoursWorked; // hours worked in a given week

    // Read in hours for employee
    printf("\nEnter hours worked by emp # %06li: ", clockNumber); 
    scanf ("%f", &hoursWorked); 

    // return hours back to the calling function
    return (hoursWorked);
 
} // getHours

//**************************************************************
// Function: printHeader
// 
// Purpose: Prints the initial table header information.
// 
// Parameters: none
// 
// Returns: void
//  
//**************************************************************

void printHeader (void) 
{ 

    printf ("\n\n*** Pay Calculator ***\n");

    // print the table header
    printf("\nClock# Wage  Hours  OT      Gross\n");
    printf("------------------------------------------------\n");

} // printHeader

//************************************************************* 
// Function: printEmp 
// 
// Purpose: Prints out all the information for an employee
// in a nice and orderly table format.
// 
// Parameters: 
//
//     clockNumber - unique employee ID
//     wageRate - hourly wage rate
//     hours - Hours worked for the week
//     overtimeHrs - overtime hours worked in a week
//     grossPay - gross pay for the week
// 
// Returns: void
//  
//**************************************************************

void printEmp (long int clockNumber, float wageRate, float hours,
                float overtimeHrs, float grossPay)
{

    // print the employee

    // TODO: add code to print out a single employee

	printf ("%06ld %5.2f %5.1f %5.1f %7.2f\n",
			clockNumber, wageRate, hours, overtimeHrs, grossPay);
} //end printEmp


// TODO: Add other functions here as needed
// ... remember your comment block headers for each function 


//**************************************************************
// Function: calcOvertimeHrs
//
// Purpose: Calculates the wage of each employee by adding
// any overtime pay to any normal pay
//
// Parameters:
//		hours[i]
//		
// Returns: overtimeHrs
//**************************************************************

float calcOvertimeHrs (float hours)
{
	float overtimeHrs = 0.0;		// init overtime hours variable
        if (hours >= STD_WORK_WEEK)
        {
            overtimeHrs = hours - STD_WORK_WEEK;
        } //end if
        
		else // no OT
        {
            overtimeHrs = 0.0;
 
        } // end else
	
	return (overtimeHrs);
} //end calcWage


//**************************************************************
// Function: calcGrossPay
//
// Purpose: Calculates the wage of each employee by multiplying
// overtime hours by the wage and the overtime pay rate and adding
// that to the remaining hours multiplied by the wage rate.
//
// Parameters:
//		overtimeHrs
//		hours
//		wageRate
//
// Returns: grossPay
//**************************************************************

float calcGrossPay (float overtimeHrs, float hours, float wageRate)
{
	float overtimePay = 0.0; 	// init variable to hold overtime pay value
	float normalPay = 0.0; 		// init variable to hold normal pay value
	float grossPay = 0.0;		// init variable for gross pay

	overtimePay = overtimeHrs * OVERTIME_RATE * wageRate;

	normalPay = wageRate * (hours - overtimeHrs);

	grossPay = overtimePay + normalPay;

	return (grossPay);
} // end calcGrossPay