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  1.  
  2. #include <stdio.h>
  3.  
  4. int main(void) {
  5. 	int i,n;
  6. 	scanf("%d",&n);
  7.  
  8. 	if (n <= 1){
  9. 		printf("素数ではない。/n");
  10. 		return 0;
  11. 	}
  12. 	for(i = 2; i <= n/2; i++){
  13. 		if(n % i == 0){
  14. 			printf("素数ではない。");
  15. 			return 0;
  16. 		}
  17. 	}
  18. 	printf("nは素数である。");
  19.  
  20. 	return 0;
  21. }
  22.  
Success #stdin #stdout 0s 5292KB
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Standard input is empty
stdout
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素数ではない。
https://ideone.com/gfdxM8
language:
C (gcc 8.3)
created:
9 days ago
visibility:
public

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