#ifndef TEMPLATEEXCHANGE_H_
#define TEMPLATEEXCHANGE_H_

#include <iostream>
#include <string>

using namespace std;

template <typename T>
void exchange(T& first, T& second)
{
    T temp = first;
    first = second;
    second = temp;
}

template <typename T>
void print(T first, T second)
{
    cout << first << " " << second << endl;
}

#endif /* TEMPLATEEXCHANGE_H_ */