C++ Program to swap two numbers using function templates

In this program, You will learn how to swap two numbers using function templates in C++.

---

template < class T >

void swap(T &x, T &y) { 
   //statement
}

Example: How to swap two numbers using function templates in C++

#include<iostream>
using namespace std;

template <class T>

void Swap(T &x, T &y) {

    T temp;

    temp = x;
    x = y;
    y = temp;
}

int main() {

    int x, y;

    cout << "Enter two numbers:";
    cin >> x>>y;

    cout << "Before Swap:";

    cout << "\nx value is:" << x;
    cout << "\ny value is:" << y;

    Swap(x, y);

    cout << "\n\nAfter Function Templates:\n";

    cout << "\nx value is:" << x;
    cout << "\ny value is:" << y;

    return 0;
}

Output:

Enter two numbers:10 20
Before Swap:
x value is:10
y value is:20

After Function Templates:

x value is:20
y value is:10