fork download
copy 
  1. #include <stdio.h>
  2.  
  3. int main(void)
  4. {
  5.     int a, b;
  6.     int i, j;
  7.     int count = 0;
  8.     int prime;
  9.  
  10.     scanf("%d %d", &a, &b);
  11.  
  12.     for (i = a; i <= b; i++)
  13.     {
  14.         if (i >= 2)
  15.         {
  16.             prime = 1;
  17.  
  18.             for (j = 2; j < i; j++)
  19.             {
  20.                 if (i % j == 0)
  21.                 {
  22.                     prime = 0;
  23.                     break;
  24.                 }
  25.             }
  26.  
  27.             if (prime == 1)
  28.             {
  29.                 count++;
  30.             }
  31.         }
  32.     }
  33.  
  34.     printf("%d\n", count);
  35.  
  36.     return 0;
  37. }
  38.  
Success #stdin #stdout 0.01s 5320KB
comments (?)
stdin
copy 
3
10
stdout
copy 
3
https://ideone.com/eGIaGS
language:
C (gcc 8.3)
created:
2 days 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!