change

 1 #include <stdio.h>
 2 int main()
 3 {
 4     int price = 0;
 5     printf("请输入金额（元）：");
 6     scanf("%d", &price);
 7     int change = 100 - price;
 8     printf("找您%d元。\n", change);
 9     return 0;
10 }