Logical operators. : bool « Data Types

Logical operators. : bool « Data Types « C++ Tutorial

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C++ Tutorial » Data Types » bool

2.6.10.Logical operators.

#include <iostream>

using std::cout;

using std::endl;

using std::boolalpha; // causes bool values to print as "true" or "false"



int main()

{

   // create truth table for && (logical AND) operator

   cout << boolalpha << "Logical AND (&&)"

      << "\nfalse && false: " << ( false && false )

      << "\nfalse && true: " << ( false && true )

      << "\ntrue && false: " << ( true && false )

      << "\ntrue && true: " << ( true && true ) << "\n\n";



   // create truth table for || (logical OR) operator

   cout << "Logical OR (||)"

      << "\nfalse || false: " << ( false || false )

      << "\nfalse || true: " << ( false || true )

      << "\ntrue || false: " << ( true || false )

      << "\ntrue || true: " << ( true || true ) << "\n\n";



   // create truth table for ! (logical negation) operator

   cout << "Logical NOT (!)"

      << "\n!false: " << ( !false )

      << "\n!true: " << ( !true ) << endl;

   return 0;

}

Logical AND (&&)
false && false: false
false && true: false
true && false: false
true && true: true

Logical OR (||)
false || false: false
false || true: true
true || false: true
true || true: true

Logical NOT (!)
!false: true
!true: false

2.6.bool
	2.6.1.	bool values
	2.6.2.	A bool value can control the if statement
	2.6.3.	Outcome of a relational operator is a true/false value
	2.6.4.	Variable size of bool
	2.6.5.	The \|\| Operator
	2.6.6.	The !(Exclamation mark) Operator
	2.6.7.	The && Operator (amplifier)
	2.6.8.	Output boolean variable as boolean literal or number
	2.6.9.	Use bool value to control a while loop
	2.6.10.	Logical operators.

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