Index

Chapter 7: Function Declarations

A function declaration in solidity looks like the following:

function eatHamburgers(string _name, uint _amount) {

}

This is a function named eatHamburgers that takes 2 parameters: a string and a uint. For now the body of the function is empty.
Note: It's convention (but not required) to start function parameter variable names with an underscore (_) in order to differentiate them from global variables. We'll use that convention throughout our tutorial.
You would call this function like so:

eatHamburgers("vitalik", 100);

Put it to the test

In our app, we're going to need to be able to create some zombies. Let's create a function for that.
1. Create a function named createZombie. It should take two parameters: _name (a string), and _dna (a uint).
Leave the body empty for now — we'll fill it in later.

pragma solidity ^0.4.25;

contract ZombieFactory {

    uint dnaDigits = 16;
    uint dnaModulus = 10 ** dnaDigits;

    struct Zombie {
        string name;
        uint dna;
    }

    Zombie[] public zombies;

    function createZombie(string _name, uint _dna) {

    }

}