1. Without running the program, you have to predict the output of the following program, by going over the steps, with proper explanation.

#include

using namespace std;

void func1(int &, int &);

void func2(int &, int, int &);

void func3(int, int &, int);

int main()

{

int x = 0, y = 0, z = 0;

cout << "x = " << x << " y = " << y << "z = " << z << endl;

func1(x, y);

cout << "x = " << x << " y = " << y << "z = " << z << endl;

func2(x, y, z);

cout << "x = " << x << " y = " << y << "z = " << z << endl;

func3(x, y, z);

cout << "x = " << x << " y = " << y << "z = " << z << endl;

return 0;

}

void func1(int & a, int & b)

{

a = 12;

b = 14;

}

void func2(int &a, int b, int & c)

{

b++;

c--;

a = b + c;

}

void func3(int a, int & b, int c)

{

b = a - c;

c = c + 5;

a = 10;

}