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LEARN SOLIDITY LESSON 3: Function Declarations. Private / Public Functions. Return Values of Functions.

LEARN SOLIDITY LESSON

Function Declarations. Private / Public Functions. Return Values of Functions.


Function Declarations

A function declaration in solidity looks like the following:
function eatHamburgers(string memory _name, uint _amount) public {

}//CALLeatHamburgers("vitalik", 100);

Private and Public Functions

In Solidity, functions are public by default. Need practice to mark your functions as private by default, and then only make public the functions you want to expose to the world.

uint[] numbers;//private function _addToArray(uint _number) private { }//public function addToArray(uint _number) public { }

Return Values of Functions

function declaration contains the type of the return value. To return a value from a function, the declaration looks like this:
Summary for English Visiterstring strHello = "learn-solidity.blogspot.com";

function sayHello() public view returns (string memory) {  return strHello;
}function _multiply(uint a, uint b) private pure returns (uint) {
  return a * b;
}

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