fork download
copy 
  1.  
  2.  #include <stdio.h>
  3.  
  4. int main()
  5. {
  6.     int n, i, flag = 1;
  7.  
  8.     printf("Enter an integer: ");
  9.     scanf("%d", &n);
  10.  
  11.     if (n <= 1)
  12.     {
  13.         flag = 0;
  14.     }
  15.     else
  16.     {
  17.         for (i = 2; i*i<= n; i++)
  18.         {
  19.             if (n % i == 0)
  20.             {
  21.                 flag = 0;
  22.                 break;
  23.             }
  24.         }
  25.     }
  26.  
  27.     if (flag == 1)
  28.     {
  29.         printf("%d it is a Prime Number.", n);
  30.     }
  31.     else
  32.     {
  33.         printf("%d it is not a Prime Number.", n);
  34.     }
  35. }
  36.  
Success #stdin #stdout 0s 5288KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
Enter an integer: 32767 it is not a Prime Number.
https://ideone.com/sGE1Do
language:
C (gcc 8.3)
created:
21 hours ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!