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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：\n");
  5.     scanf("%d",&a);
  6.     switch(a){
  7.  
  8.         case 2:
  9.         printf("28日\n");
  10.         break;
  11.         case 1: case 3: case 5: case 7: case 8: case 10 : case 12:
  12.         printf("31日\n");
  13.         break;
  14.         case 4: case 6: case 9: case 11:
  15.         printf("30日");
  16.         break;
  17.         default:
  18.         printf("1-12ではありません。\n");
  19.         break;
  20.     }
  21.     return 0;
  22. }
  23.  
  24.  
Success #stdin #stdout 0s 5312KB
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1以上12以下の整数を入力してください：
28日
https://ideone.com/jY5bzX
language:
C (gcc 8.3)
created:
10 days ago
visibility:
public

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