Restarting program instead of closing?

[kergeroth]

So I created a simple calculator (I know, how cliche...)
And I was wondering if there's a way to restart it instead of it closing. Like rerunning the program without closing so you can do multiple equations in one.

Here's my code.

#include <iostream>
using namespace std;
int add (int x, int y)
{
    cout << "" << x << " and " << y << "\n";
    return (x+y);
}

int main()
{
    cout << "Basic calculator (adding) !\n";
    int a, b, c;
    cout << "Enter two numbers: ";
    cin >> a;
    cin >> b;
    cout << "\nAdding\n";
    c=add(a,b);
    cout << "\n";
    cout << a << "+" << b << "=" << c;
    cout << "\nRestart when ready.\n\n";
    return 0;
}

[LB]

Use a do-while loop:

do
{
    //code here
    cout << "Do you want to do another calculation? (y/n) ";
    char yn;
    cin >> yn;
}while(yn == 'y' || yn == 'Y');

[chipp]

or

do
{
    //code here
    cout << "Do you want to do another calculation? (y/n) ";
    char yn;
    cin >> yn;
}while(toupper (yn) == 'Y');