CODEWITHSUNDEEP
blockchainethereumsoliditysmartcontracts
Tuna Öztürk
Tuna Öztürk

Reputation: 11

I'm having a hard time on the solidity course

I am new on stackowerflow and also solidity.

I have to do: In function booleanOperatorTest, negate the variable foo and assign the result to variable negation

pragma solidity ^0.4.17;

contract OperatorTutorial {

    function booleanOperatorTest(bool foo, bool bar) public pure
        returns (bool negation, bool conjunction, bool disjunction, bool equality, bool inequality) {

        // Negate the variable "foo" and assign the result to variable "negation"
        // negation =
}

I tried everything but i can't pass this step, please help, thank you .

Upvotes: 0

Views: 284

Answers (3)

user16366044
user16366044

Reputation: 

pragma solidity ^0.4.17;

contract OperatorTutorial {

    function booleanOperatorTest(bool foo, bool bar) public pure
        returns (bool negation, bool conjunction, bool disjunction, bool equality, bool inequality) {

        // Negate the variable "foo" and assign the result to variable "negation"
        // negation =
           negation = !foo;
        // Use logical "and" on variables "foo" and "bar" and assign the result to variable "conjunction"
        // conjunction =
           conjunction  = (foo && bar);
        // Use logical "or" on variables "foo" and "bar" and assign the result to variable "disjunction"
        // disjunction =
           disjunction = (foo || bar);
        // Make sure variable "equality" is true when "foo" and "bar" are equal and is false otherwise.
        // equality =
           equality = (foo  == bar);
        // Make sure variable "inequality" is true when "foo" and "bar" are not equal and is false otherwise.
        // inequality =
           inequality = (foo != bar);
    }

Upvotes: 0

Tuna Öztürk
Tuna Öztürk

Reputation: 11

pragma solidity ^0.4.17;

contract OperatorTutorial {

    function booleanOperatorTest(bool foo, bool bar) public pure
        returns (bool negation, bool conjunction, bool disjunction, bool equality, bool inequality) {
        negation = !foo;
 }

Thanks to Mert Sungur

Upvotes: 1

utku glsvn
utku glsvn

Reputation: 38

Example function:

function booleanOperatorTest(bool foo, bool bar) public pure
    returns (bool negation,bool conjunction) {

    // Negate the variable "foo" and assign the result to variable "negation"
      negation =foo;
      conjunction  = (foo && bar);
      ...

}

Upvotes: 0

Related Questions