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  1. #include <stdio.h>
  2.  
  3. int main(void)
  4. {
  5.     int n; 
  6.  
  7.     do {
  8.         printf("２以上の整数ｎ：\n");
  9.         scanf("%d", &n);
  10.  
  11.         if (n < 2)
  12.             printf("２以上の整数を入力して！\n");
  13.     } while (n < 2);
  14.  
  15.     int no = 0;
  16.     int i;
  17.  
  18.     for (i = 2; i < n; i++) {
  19.         if (n % i == 0){
  20.             no = 1;
  21.             break;
  22.         }
  23.     }
  24.  
  25.     if (no) {
  26.         printf("この整数%dは%dで割り切れます。\n", n, i);
  27.     } else {
  28.         printf("この整数%dは素数です。\n", n);
  29.     }
  30.  
  31.     return 0;
  32. }
Success #stdin #stdout 0s 5324KB
comments (?)
stdin
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50
stdout
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２以上の整数ｎ：
この整数50は2で割り切れます。
https://ideone.com/xBWqAp
language:
C++ (gcc 8.3)
created:
9 days ago
visibility:
public

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