I can't solve this: Understanding Uninitialized Variables

Tell us what’s happening:

Your code so far

// Initialize these three variables
var a;
var b;
var c;

// Do not change code below this line

a = a + 1;
b = b + 5;
c = c + " String!";
var a = 6;
var b = 15;
var c = c + "I am a string!";

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36.

Link to the challenge:

take a look here: I need help with undefined and i do not know what to do

@snowmonkey thanks alot:clap: I had figure it out :+1: