JavaScript: Understanding Uninitialized Variables

When JavaScript variables are declared, they have an initial value of undefined. If you do a mathematical operation on an undefined variable your result will be NaN which means "Not a Number". If you concatenate a string with an undefined variable, you will get a literal string of "undefined".

var myVariable = 7;

This assigns the Number value 7 to myVariable.

var myVariable = "Christian";

This assigns the String value Christian to myVariable.

Exercices

Initialize the three variables a, b, and c with 7, 10, and "I am a String!" respectively so that they will not be undefined.

// Only change code below this line
var a = ?;
var b = ?;
var c = "?";
/* Your test output will go here.
*/