2.5.11.3 Logical Operators

Table 2.3 shows the logical operators which also give Boolean as the

output, as follows:

OPERATOR

DENOTATION

DESCRIPTION

Logical AND

&&

Returns true if both conditions are true, and

false if one or both conditions are false

Logical OR

||

Returns true if one or both conditions are true,

and false when both are false

Logical NOT

!

Returns true if the condition is not satisfied,

else false

Table 2.3: Logical Operators

The following is a sample program:

// SPDX-License-Identifier: Some Identifier

pragma solidity ^0.8.10;

contract LogicalContract {

uint a = 10;

uint b = 2;

function logicalAnd() public view returns(bool) {

return a >= b && a > b;

}

function logicalOr() public view returns(bool) {

return a == b || a > b;

}

function logicalNot() public pure returns(bool) {

bool someBool = true;

return !someBool;

}

}

2.5.11.4 Bitwise Operator