//********************************************************
//
// Assignment 5 - Functions
//
// Name: Brian Fallon
//
// Class: C Programming, Spring 2025
//
// Date: March 2, 2025
//
// 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 hoursTotal,
                float overtimeHrs, float grossPay);

// TODO:  Add other function prototypes here as needed
float calcOT (float hoursTotal); // Function Prototype
float calcGross (float wageRate, float hoursTotal, float overtimeHrs); // Function Prototype
	
int main()
{

    /* Variable Declarations */

    long  int clockNumber[SIZE] = {98401,526488,765349,34645,127615}; // ID
    float grossPay[SIZE];     // gross pay
    float hoursTotal[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
    float overtimePay [SIZE]; // overtime pay for a given week
    float normalPay [SIZE];   // normal weekly pay without any overtime

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

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

        // TODO: Function call to calculate overtime hours
			overtimeHrs[i] = calcOT(hoursTotal[i]);
			
        // TODO: Function call to calculate gross pay
		   grossPay[i] = calcGross(wageRate[i], hoursTotal[i], overtimeHrs[i]);
		   
    } // End for

    // 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], hoursTotal[i],
                   overtimeHrs[i], grossPay[i]);

    } // End 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) //Called Function
{ 

    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 hoursTotal,
                float overtimeHrs, float grossPay)
{

    // print the employee
    // TODO: add code to print out a single employee
    	printf("%06d %5.2f %5.1f %5.1f %8.2f\n", 
                clockNumber, wageRate, hoursTotal, overtimeHrs, grossPay);
} //printEmp


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

//************************************************************* 
// Function: calcOT
// 
// Purpose: 
// 
// Parameters: 
//
//     
// 
// Returns: overtimeHrs
//  
//**************************************************************
//
float calcOT (float hoursTotal) // Function Definition
{
	float overtimeHrs; 
	
	if (hoursTotal > STD_WORK_WEEK)
        {
            overtimeHrs = hoursTotal - STD_WORK_WEEK;
   
        } // End if
        
	return (overtimeHrs);
} // calcOT

//************************************************************* 
// Function: calcGross 
// 
// Purpose: 
// 
// Parameters: 
//
//     
// 
// Returns: grossPay
//  
//**************************************************************
//
float calcGross (float wageRate, float hoursTotal, float overtimeHrs) // Function Definition
{ 
	float grossPay;
	float normalPay;
	float overtimePay;
	
	if (hoursTotal > STD_WORK_WEEK)
	        {
	            overtimeHrs = hoursTotal - STD_WORK_WEEK;
	    		overtimePay = overtimeHrs * (OVERTIME_RATE*wageRate);
	    		normalPay= STD_WORK_WEEK * wageRate;
	        } // End if
	        else // No Overtime
	        {
	            overtimeHrs = 0;
				normalPay=wageRate*hoursTotal;
	        } // End else
		 grossPay = normalPay + overtimePay;
    
	return (grossPay);
} // calcGross
//
//**************************************************************