//............................

//Ho ten: Pham Cong Quang.

//class: K53CA_N2

//project:

//purpose:

//............................

#include <iostream>

using namespace std;

main()

{

int n,a,b,c;

cout << "n= ";

cin >> n;

cout << "cac so nguyen to nho hon hoac bang " << n << ": " <<endl;

for (a=2;a<=n;a++){

c=1;

for (b=2;b<=a/2;b++)

if (a%b==0)

c=0;

if (c==1)

cout <<a<<endl;

}

system("pause");

return 0;

}