Control structures in Solidity

Most of the control structures from other languages are also supported in solidity. In this recipe, you will learn about supported control structures in solidity, along with examples. The semantics are very similar to C or JavaScript.

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...