//Swaping, add using for cout,endl..
int main(void)
{
 int a=321,b=258;
 cout << "Before swaping: a=" << a << " b=" << b << endl;
 a=a+b; 
 b=a-b; 
 a=a-b; 
 cout << "After Swaping: a=" << a << " b=" << b << endl;
 return 0;
}