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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. 	int a;
  5. 	scanf("%d",&a);
  6. 	switch(a){
  7. 		case 1:
  8. 		case 3:
  9. 		case 5:
  10. 		case 7:
  11. 		case 8:
  12. 		case 10:
  13. 		case 12:
  14. 		printf("%d月は31日あります",a);
  15. 		break;
  16.  
  17. 		case 4:
  18. 		case 6:
  19. 		case 9:
  20. 		case 11:
  21. 		printf("%d月は30日あります",a);
  22. 		break;
  23.  
  24. 		case 2:
  25. 		printf("2月は28日あります。");
  26. 	}
  27. 	return 0;
  28. }
  29.  
Success #stdin #stdout 0.01s 5316KB
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2月は28日あります。
https://ideone.com/XiQyGI
language:
C (gcc 8.3)
created:
16 days ago
visibility:
public

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