// Template functie swap



#include <iostream>

#ifdef _MSC_VER

// With Microsoft Visual C++ we can not use 'using namespace std' 

// because that compiler tries to invoke std::swap and is confused

using std::cin;

using std::cout;

using std::endl;

#else

using namespace std;

#endif



template <typename T> void swap(T& p, T& q) {

	T t(p);

	p=q;

	q=t;

}



int main() {

	int n(2);

	int m(3);

	cout<<"n = "<<n<<" m = "<<m<<endl;

	swap(n, m);

	cout<<"n = "<<n<<" m = "<<m<<endl;

	double x(2.2);

	double y(3.3);

	cout<<"x = "<<x<<" y = "<<y<<endl;

	swap(x, y);

	cout<<"x = "<<x<<" y = "<<y<<endl;

	cin.get();

	return 0;

}