oY4MVG - Online C Compiler & Debugging Tool

#include <stdio.h>

void cal(int x, int y, int *sum, int *diff, int *mul, int *mod) {
    *sum = x + y;
    *diff = (x > y) ? (x - y) : (y - x);  // 差は必ず正にする
    *mul = x * y;
    *mod = x / y;  // 小数点以下切り捨て
}

int main(void) {
    int x, y;
    int sum, diff, mul, mod;

    printf("x を入力してください：");
    scanf("%d", &x);

    printf("y を入力してください：");
    scanf("%d", &y);

    cal(x, y, &sum, &diff, &mul, &mod);

    printf("x + y = %d\n", sum);
    printf("x と y の正の差 = %d\n", diff);
    printf("x * y = %d\n", mul);
    printf("x / y (切り捨て) = %d\n", mod);

    return 0;
}