Joe Chung
Monmouth U. Homepage

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See the following code:

#include <iostream>
using namespace std;


void swapvars( int& a, int& b ) {
    int temp = a;
    a = b;    // a is now b
    b = temp; // b is now a
}


int main ()
{
   int a = 2;
   int b = 3;
   
   swapvars( a, b );
   
   cout << "The value of a is " << a << " and the value of b is " << b;
   
   return 0;
}

What will be output by the above program?

• a - The value of a is 2 and the value of b is 3;
• b - The value of a is 3 and the value of b is 2;
• c - The value of a is 2 and the value of b is 2;
• d - The value of a is 3 and the value of b is 3;

<poll What will be output by the above program? [d]>

• a
• b
• c
• d

</poll>