동전교환기

#include <stdio.h>
void main(void) {
	int a = 0; //500원
	int b = 0; //100
	int c = 0; //50
	int d = 0; //10
	int money = 0;

	printf("how much?");
	scanf("%d",&money);

	a = money / 500;
	b = (money - (a * 500)) / 100;
	c = (money - (a * 500) - (b * 100)) / 50;
	d = (money - (a * 500) - (b * 100) - (c * 50)) / 10;

	printf("----\n동전교환\n----\n");
	printf("500: %d\n", a);
	printf("100: %d\n", b);
	printf("50: %d\n", c); 
	printf("10: %d\n", d);
	printf("change: %d", money - (a * 500) - (b * 100) - (c * 50) - (d * 10));

}