Code and run the swap function with main as given on page 2 in the Instructor's Notes on Functions - Pass By Reference. Submit the output with explanations about:

What happened and why?

How can you fix the function to also swap a and b in main?

Explain how pass-by-value works

Explain how pass-by-reference works

Here is the code!

#include

using namespace std;

void swap (int x, int y)

{

int hold ;

hold = x ;

x = y ;

y = hold ;

cout << At end of swap method x is << x << endl;

cout << At end of swap method y is << y << endl;

}

int main ()

{

int a = 10, b= 20;

cout << a is << a << endl;

cout << b is << b << endl;

swap (a,b);

cout << In main after swap a is << a << endl;

cout << In main after swap b is << b << endl;

}

This is in C++