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                          Logical Operators: AND(&&) OR(||) NOT(!) in c++

• You must be understand about first go through relational operators. 
• We need to test more than one condition. 
• To simplify this logical operators were introduced. 
• You are touched and learned from your eldest school you might have learnt Boolean Algebra (Logic).
• That as  same formulate it.But it is translate code program in C and C++. 

The three logical operators ( AND, OR and NOT ) are as follows: 

1) AND (&&) : Returns true only if both operand are true.
2) OR (||) : Returns true if one of the operand is true.
3) NOT (!) : Converts false to true and true to false.

Operator	Operator's Name	Example	Result
&&	AND	3>2 && 3>1	1(true)
&&	AND	3>2 && 3<1	0(false)
&&	AND	3<2 && 3<1	0(false)
||	OR	3>2 || 3>1	1(true)
||	OR	3>2 || 3<1	1(true)
||	OR	3<2 || 3<1	0(false)
!	NOT	!(3==2)	1(true)
!	NOT	!(3==3)	0(false)

Program-I

#include <iostream>

using namespace std;

int main () 

{

    cout << "3 > 2 && 3 > 1: " << (3 > 2 && 3 > 1) << endl;

    cout << "3 > 2 && 3 < 1: " << (3 > 2 && 3 < 1) << endl;

    cout << "3 < 2 && 3 < 1: " << (3 < 2 && 3 < 1) << endl;

    cout << endl;

    cout << "3 > 2 || 3 > 1: " << (3 > 2 || 3 > 1) << endl;

    cout << "3 > 2 || 3 < 1: " << (3 > 2 || 3 < 1) << endl;

    cout << "3 < 2 || 3 < 1: " << (3 < 2 || 3 < 1) << endl;

    cout << endl;

    cout << "! (3 == 2): " << ( ! (3 == 2) ) << endl;

    cout << "! (3 == 3): " << ( ! (3 == 3) ) << endl;

    return 0;

}