Thread: Why isn't this looping?

Hey guys

I got the this program to do what I want but it doesn't loop until 'Q' is entered. I am just not understanding this, can someone tell me why this doesn't loop?

Thanks

Code:

#include <stdio.h>
#include <stdlib.h>

int main()
{

// Declare variables

float sales = 0.0;
float trateDelmar = .0725;
float trateEncinitas = .0750;
float trateLajolla = .0775;
float staxDelmar = 0.0;
float totamtDelmar = 0.0;
float staxEncinitas = 0.0;
float totamtEncinitas = 0.0;
float staxLajolla = 0.0;
float totamtLajolla = 0.0;
char input[10];
char selection;

	// Program header
	printf("\nName:\t\t Brandon McHenry\n");
	printf("Class:\t\t POS 370\n");
	printf("Assignment:\t Workshop 5\n");
	printf("--------------------------------\n");
	printf("\nTax calculation program for Kudler stores\n");
	printf("\nEnter Purchase Amount: ");
	
	// Read the input and assign it to sales
	scanf("%s", input);
	sales = atof(input);
			
	if(sales <= 0.0)
		{
			printf("Invalid input\n");
                	return 1;
        	}
        
        // Calculating the sales tax and total amount
        staxDelmar = trateDelmar * sales;
        totamtDelmar = staxDelmar + sales;
        staxEncinitas = trateEncinitas * sales;
        totamtEncinitas = staxEncinitas + sales;
        staxLajolla = trateLajolla * sales;
        totamtLajolla = staxLajolla + sales;
        
        // Displaying the store selection menu 
        // Loop until 'Q' is selected
        do
        {             	
	printf("\n           Store Selection Menu\n");
	printf("\t--------------------------\n");
	printf("\n\tD) Del Mar\n"); 
	printf("\tE) Encinitas\n"); 
	printf("\tL) LaJolla\n"); 
	printf("\tQ) Quit\n");
	printf("\n\tSelect D, E, L, or Q :");
	
	// Read the selection input and display the selected output until Q is selected
	
	scanf("%c", &selection);
	
	
	
		if(selection == 'D')
		{
			printf("\n\tStore name: Del Mar\n");
			printf("\tTax rate: %.2f\n", trateDelmar * 100);
			printf("\tPurchase amount: %.2f\n", sales);
			printf("\tTax amount: %.2f\n", staxDelmar);
			printf("\tTotal sale amount: %.2f\n", totamtDelmar);
			fflush(stdin);
			getch();
			
		}
		if(selection == 'E')
		{
			printf("\n\tStore name: Encinitas\n");
			printf("\tTax rate: %.2f\n", trateEncinitas * 100);
			printf("\tPurchase amount: %.2f\n", sales);
			printf("\tTax amount: %.2f\n", staxEncinitas);
			printf("\tTotal sale amount: %.2f\n", totamtEncinitas);
			fflush(stdin);
			getch();
			
		}
		if(selection == 'L')
		{
			printf("\n\tStore name: LaJolla\n");
			printf("\tTax rate: %.2f\n", trateLajolla * 100);
			printf("\tPurchase amount: %.2f\n", sales);
			printf("\tTax amount: %.2f\n", staxLajolla);
			printf("\tTotal sale amount: %.2f\n", totamtLajolla);
			fflush(stdin);
			getch();
			
		}
	}
		while(selection == 'Q');		
					
	return 0;	
}

// End of program

Try this

Code:

....
while (1)
{
     	scanf("%c", &selection);
        if (selection == 'D')
        {
            .......
        }
        else if (selection == 'Q')
               break;
 
}
return 0;
....

You could use a switch too.

I see, I am reading it wrong. I think I understand now.

Thanks