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  1. #include <stdio.h>
  2.  
  3. int main() {
  4.     int a, b, op;
  5.     scanf("%d %d %d", &a, &b, &op);
  6.  
  7.     switch (op) {
  8.         case 1: // 足し算
  9.             printf("%d + %d = %d\n", a, b, a + b);
  10.             break;
  11.         case 2: // 引き算
  12.             printf("%d - %d = %d\n", a, b, a - b);
  13.             break;
  14.         case 3: // 掛け算
  15.             printf("%d * %d = %d\n", a, b, a * b);
  16.             break;
  17.         case 4: // 割り算
  18.             if (b == 0) {
  19.                 printf("エラー：0で割ることはできません。\n");
  20.             } else if (a % b == 0) {
  21.                 printf("%d ÷ %d = %d\n", a, b, a / b);
  22.             } else {
  23.                 printf("%d ÷ %d = %d 余り %d\n", a, b, a / b, a % b);
  24.             }
  25.             break;
  26.  
  27.  
  28.         default:
  29.             printf("無効な演算番号です。\n");
  30.     }
  31.  
  32.     return 0;
  33. }
  34.  
Success #stdin #stdout 0s 5304KB
comments (?)
stdin
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10 2 4
stdout
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10 ÷ 2 = 5
https://ideone.com/fb6rhD
language:
C (gcc 8.3)
created:
9 days ago
visibility:
public

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