Program Menukar Nilai Dua Variabel

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

using namespace std;
int main()
{
   int temp,a,b;

   a =100;
   b =50;
   cout << "isi nilai :"<<a << endl; 
   cout << "isi nilai2 :"<<b << endl;  
   temp =a;
   a =b;
   b =temp;
   cout << "sesudah tertukar" << endl;  
   cout << "isinilai = "<<a << endl;  
   cout << "isinilai = "<<b << endl;
   getch();
}