/*
  Name: logical.cpp
  Copyright: AHD c 2006
  Author: Anne Dawson
  Date: 08/01/06 09:07
  Description: demonstrates logical operators && (And) and || (Or)
*/

/*  And Truth table:
    F   F      F
    T   F      F
    F   T      F
    T   T      T
    

    Or Truth table:
    F   F      F
    T   F      T
    F   T      T
    T   T      T
*/
    
#include <iostream> // for cin and cout

using namespace std;

int main()
{
	int num1 = 10;
	int num2 = 20;

	cout << "Note: num1 = 10 and num2 = 20" << endl << endl;

	if ((num1 > 5) && (num2 > 5)) // the AND operator &&
	{
		cout << "both num1 and num2 are greater than 5" << endl;
	}
	else
	{
		cout << "num1 and num2 are not both greater than 5" << endl;
	}

    system("PAUSE"); // outputs the message "Press any key to continue .  .  ."
                     // and waits for as key press
	
    if ((num1 == 10) && (num2 == 20)) // the AND operator &&
	{
		cout << "num1 is equal to 10 and num2 is equal to 20" << endl;
	}
	else
	{
		cout << "num1 == 10 and num2 == 20 are not both true" << endl;
	}

    system("PAUSE"); // outputs the message "Press any key to continue .  .  ."
                     // and waits for as key press
	
	if ((num1 == 10) && (num2 == 10)) // the AND operator &&
	{
		cout << "num1 = 10 and num2 = 10" << endl;
	}
	else
	{
		cout << "num1 and num2 are not both equal to 10" << endl;
	}

    system("PAUSE"); // outputs the message "Press any key to continue .  .  ."
                     // and waits for as key press

	if ((num1 == 10) || (num2 == 10)) // the OR operator ||
	{
		cout << "num1 or num2 is equal to 10" << endl;
	}
	else
	{
		cout << "neither num1 or num2 is equal to 10" << endl;
	}

    system("PAUSE"); // outputs the message "Press any key to continue .  .  ."
                     // and waits for as key press
                     
    return 0; // integer 0 is returned to the operating system

}