Suggested controller/service structure

gistfile1.js

{
    // private field init
    var a = 1;

    // public field init
    $scope.b = 1; // For controllers
    this.c = 1; // For services

    // call init function
    init();

    function init() {
        // Initialization logic is here
        if () {
                ...
        }
    }

    // Public functions
    this.func = function () {
    }
    
    // Private functions
    function func2() {
    };
}