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  1. #include <stdio.h>
  2.  
  3. int prime(int n);
  4.  
  5. int main(void) {
  6.     int n;
  7.  
  8.     scanf("%d",&n);
  9.     if (prime(n)==1) {
  10.         printf("素数です\n");
  11.     }
  12.     else {
  13.         printf("素数ではありません\n");
  14.     }
  15.  
  16.     return 0;
  17. }
  18.  
  19.  
  20. int prime(int n) {
  21.  
  22.     int i;
  23.  
  24.     if (n<=1)
  25.         return 0;
  26.  
  27.     for(i=2; i<=n-1; i++) {
  28.          if(n % i==0) {
  29.              return 0;
  30.          }
  31.     }
  32.  
  33.     return 1;
  34. }
  35.  
  36.  
  37.  
Success #stdin #stdout 0s 5312KB
comments (?)
stdin 
4
stdout 
素数ではありません
https://ideone.com/q3Ebv1
language:
C (gcc 8.3)
created:
6 days ago
visibility:
public

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