Operators in Solidity

Logical_operators.sol

// SPDX-License-Identifier: UNLICENSED

pragma solidity ^0.8.0;

uint constant T = 10;

contract Logical_Operation {
    
    uint x = 10;
    uint y = 20;

    bool a = x > y ; // a is false
    bool b = x < y;  // b is true

    // Logical AND
    bool test1 = a && b;        // false && true -> false
    bool test2 = a && false;    // false && false -> false
    bool test3 = true && b;     // true && true -> true
    bool test4 = true && false; // true && false -> false

    // Logical OR
    bool test5 = a || b;        // false && true -> true
    bool test6 = a || false;    // false && false -> false
    bool test7 = true || b;     // true && true -> true
    bool test8 = true ||false;  // true && false -> true

    // Logical NOT
    bool test9 = !a;   // test9 will be true
    bool test10 = !b;  // test10 will be false

}