Chapter 6.13, Problem 6.23CP

The following program asks the user to enter two numbers. What is the output of the program if the user enters 12 and 14?

#include <iostream>

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 << " " << y << z << endl;

func1(x, y);

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

func2(x, y, z);

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

func3(x, y, z);

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

return 0;

}

void func1(int &a, int &b)

{ cout << "Enter two numbers: ";

cin >> a >> b;

}

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

{ b++;

c - -;

a = b + c;

}

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

{ a = b + c;

}