Program To Calculate Discount using 'if' statement.

#include
main()

{
int qty,dis=0; /*initializing is required as if tot<1000, then discount is 0*/
float rate, tot;

printf ("Enter quantity and rate: ");
scanf ("%d %f", &qty, &rate);

if (qty>1000)
dis=10;

tot=(qty*rate) - (qty*rate*dis/100);

printf("Total expenses = Rs. %f", tot);

}