Logical Operators

Logical Operators

&&, ||, !

Logical operators are used to perform logical operations.

It always return true or false.

&&

It is called logical AND.

true && true returns true
true && false returns false
false && true returns false
false && false returns false

example:
m = 10;
n = 20;
p = 30;
q = 40;
res = (a < b) && (p > q);
In this example a < b returns true and p > q returns false therefore res will be false

||

It is called logical OR.

true || true returns true
true || false returns true
false || true returns false
false || false returns false

example:
m = 10;
n = 20;
p = 30;
q = 40;
res = (a < b) || (p > q);
In this example a < b returns true and p > q returns false therefore res will be true

!

It is called logical OR.

example:
!(10 < 20) returns false
!(10 > 20) returns true