#include
void main() {
const double price = 3.50; /* price*/
int quantity = 0;
printf("Enter the number that you want to buy:"); /* Prompt message */
scanf(" %d", &quantity); /* Read the input */
/* Test for order quantity qualifying for a discount */
if( quantity>20) /* 5% discount */
printf("The price for %d is $%.2f\n", quantity, quantity * price * 0.95);
else
/* No discount */
printf("The price for %d is $%.2f\n", quantity, quantity * price);
}