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Question

What is the output of this program?
    #include <iostream>
    using namespace std;
    void fun(int x, int y)
    {
        x = 20;
        y = 10;
    }
    int main()
    {
        int x = 10;
        fun(x, x);
        cout << x;
        return 0;
    }

a.

10

b.

20

c.

compile time error

d.

none of the mentioned

Answer: (a).10

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