Question 41

What is the output of this C++ program?
#include <iostream>
using namespace std;
void square (int x)
{
x = (x)++ (x);
}
void square (int x, int y)
{
x = (x) --(*y);
}
int main ( )
{
int number = 30;
square(&number, &number);
cout << number;
return 0;
}

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