Question:

What is the output of this program?

    #include <iostream>
    using namespace std;
    void swap(int &a, int &b);
    int main()
    {
        int a = 5, b = 10;
        swap(a, b);
        cout << "In main " << a << b;
        return 0;
    }
    void swap(int &a, int &b)
    {
        int temp;
        temp = a;
        a = b;
        b = temp;
        cout << "In swap " << a << b;
    }

 

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