Menghitung nilai discount menggunakan if

/* File program : discount.c */

#include <stdio.h>

main()

{

double total_pembelian, discount = 0;

clrscr();

printf("Total pembelian = Rp ");

scanf("%lf", &total_pembelian);

if(total_pembelian >= 100000)

discount = 0.05 * total_pembelian;

printf("Besarnya discount = Rp %.2lf\n", discount); getch();}