Asal sayı bulan c++ kodu  
  
 #include<iostream.h>
#include<conio.h>
int asalmi(int a)
{
int i;
char asal=''''E'''';
	for(i=2; i<a; i++)
  {
  	if((a%i)==0)
   {
   asal=''''H'''';
   break;
   }
  }
  if(asal==''''H'''')return 0;
  if(a==2)return 1;
  if(asal==''''E'''')return 1;
}
void asal_ara(int a,int b)
{
int i;
for(i=a; i<=b; i++)
{
	if(asalmi(i)==1){cout<<i<<"\t&quo  t;;}
  else continue;
}
}
main()
{
int a,b;
cout<<"alt sinir:";
cin>>a;
cout<<"ust sinir:";
cin>>b;
	asal_ara(a,b);
  getch();
}