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  1. #include <stdio.h>
  2.  
  3. int prime(int n){
  4. 	int i;
  5.  
  6. 	if(n <= 1){
  7. 		return 0;
  8. 	}
  9.  
  10. 	for(i = 2;i < n;i ++){
  11. 		if(n % i == 0){
  12. 			return 0;
  13. 		}
  14. 	}
  15.  
  16. 	return 1;
  17. }
  18. int main(void) {
  19. 	int n;
  20.  
  21. 	printf("正の整数を入力してください\n");
  22. 	scanf("%d",&n);
  23.  
  24.     if(prime(n) == 1){
  25.     	printf("素数です\n");
  26.     }else{
  27.     	printf("素数ではありません\n");
  28.     }
  29. 	return 0;
  30. }
  31.  
Success #stdin #stdout 0.01s 5316KB
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正の整数を入力してください
素数です
https://ideone.com/CkRcBa
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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