Ethereum Cookbook

How to do it...

1. If-else condition statements are used to perform different actions based on different conditions. Create a function, isValid, which returns true for input values greater than 10 and returns false otherwise:

pragma solidity ^0.4.23;contract test {    function isValid(uint input) public pure         returns (bool) {        if (input > 10) {            return true;        } else {            return false;        }    }}

Solidity doesn't support type conversion from Boolean to non-Boolean types as in other languages like JavaScript. So, if(1) { } is not a valid condition in solidity.

2. A while loop allows code to be executed repeatedly based on a Boolean condition. Create a while loop to send Ether to all addresses present in the array:

pragma solidity ^0.4.23;contract test { function ...