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  1. #include <stdio.h>
  2. int main() {
  3.     int a;
  4.     printf("1以上12以下の整数を入力してください："); 
  5.     scanf("%d",&a);
  6.     switch(a) {
  7.         case 2:
  8.             printf("28日または29日\n");
  9.             break;
  10.         case 4:
  11.         case 6:
  12.         case 9:
  13.         case 11:
  14.             printf("30日\n");
  15.             break;
  16.         case 1:
  17.         case 3:
  18.         case 5:
  19.         case 7:
  20.         case 8:
  21.         case 10:
  22.         case 12:
  23.             printf("31日\n");
  24.             break;
  25.     }
  26.     return 0;
  27. }
Success #stdin #stdout 0.01s 5280KB
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1以上12以下の整数を入力してください：31日
https://ideone.com/G3XoYm
language:
C (gcc 8.3)
created:
3 days ago
visibility:
public

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