/* exersise 8 --
 * Write a program that requests the hours worked in a week and then prints the gross pay, the taxes, and the net pay. Assume the following:

Basic pay rate = user enters choice

Overtime (in excess of 40 hours) = time and a half

Tax rate


15% of the first $300



20% of the next $150



25% of the rest



 *
 *
*/

#include <stdio.h>
#include <ctype.h>
int main(void)
{
	int hrs = 0;				// the number of hours worked
	int othrs = 0;				// the number of hrs over 40
	float grosspay = 0.0;			// gross pay
	float netpay = 0.0;			// net pay
	float txrate1 = 0.15;			// rate for first 300
	float txrate2 = 0.20;			// rate for next 150
	float txrate3 = 0.25;			// rate for the rest
	float taxes	= 0.0;			// taxes
	float basepay	= 0.0;			// pay rate
	int choice	=0;			// menu choice
	// get pay rate
	printf("****************************************************************\n");
	printf("Enter the number the corresponds with your current rate of pay: \n");
	printf("1) $8.75/hr\t\t\t2) $9.33/hr\n");
	printf("3) $10.00/hr\t\t\t4) $11.20/hr\n");
	printf("5) quit\n");
	printf("****************************************************************\n");
	scanf(" %d",&choice);
	
	// validate choice
	if ((choice > 5))
	{
		do
		{
			printf("You did not enter a valid choice, please try again!\n\n");
			printf("****************************************************************\n");
			printf("Enter the number the corresponds with your current rate of pay: \n");
			printf("1) $8.75/hr\t\t\t2) $9.33/hr\n");
			printf("3) $10.00/hr\t\t\t4) $11.20/hr\n");
			printf("5) quit\n");
			printf("****************************************************************\n");
		}while((scanf(" %d",&choice) != 1) || (choice > 5));
	}


		switch(choice)
		{
		case 1:
			basepay = 8.75;
			break;
		case 2:
			basepay = 9.33;
			break;
		case 3:
			basepay = 10.00;
			break;
		case 4:
			basepay = 11.20;
			break;
		default:
			printf("Quitting the program. Good bye!");
			exit(0);
		}

	

	// get the hours worked
	printf("\nIt's time to get paid. ");
	printf("Please enter the number of hours you worked this week: ");
	scanf(" %d",&hrs);

	
	// calculate normal and ot hours
	
	if(hrs < 40)
	 {
	 	othrs = 0;
	 }
	 else
	 {
	 	othrs = hrs - 40;
	 	hrs = 40;
	 }
	 
	 // calculate the gross pay
	 
	 grosspay = (hrs * basepay) + (othrs * basepay * 1.5);
	 
	 // calculate taxes
	 
	 if (grosspay <= 300.00)
	 {
	 	taxes =	grosspay * txrate1;
	 	netpay = grosspay - taxes;
	 }	
	 else if (grosspay <= 450.00)
	 {	taxes = ((grosspay - 300)*txrate2) + (300.00*txrate1);
	 	netpay = grosspay - taxes;
	 }
	 else
	 {	
	 	taxes = ((grosspay - 450.00)*txrate3) + (150.00*txrate2) + (300.00*txrate1);
	 	netpay = grosspay - taxes;
	 }	
	// display the results
	
	printf("Gross Pay:\t\t\t%.2f\n",grosspay);
	printf("Taxes    :\t\t\t%.2f\n",taxes);
	printf("Net Pay  :\t\t\t%.2f\n",netpay);
	
	return 0;	// end program
}