#include <iostream.h> 
#include <conio.h> 

 const int TRUE=1; 
 const int FALSE=0;
  
 int check_primary(int);
 void main(void) 
  { 
   int number, limit; 
     cout<<endl<<"Enter a limit for the search for primary numbers "; 
      cin>>limit; 
     for(number=1;number<=limit;number++) 
      if(check_primary(number)) 
       cout<<number<<" "; 
  } 
   int check_primary(int num) 
   { 
      int i; 
      int num_is_primary=TRUE; 
      for(i=2; i<=num/2; i++) 
        if(!(num%i)) 
           num_is_primary=FALSE; 
        return num_is_primary; 
        getch(); 
   }