Variable Declarations - var let const

    // variable scope
    // create some Global variables
    var ranger = 'Aragorn'; 
    let elf = 'Legolas';
    const DWARF = 'Gimli'; // cannot be re-assigned
    let hobbit = 'Sam';
    
    function goToMountDoom () { 
        for (var i=0; i <100; i++){
            // i is a local scope variable
        }
        for (let c=0; c<100; c++){
            // c is a block scope variable
        }
        console.log ('i', i);
        console.log('c', c);
        let hobbit = 'Frodo';
    }
    
    function visitLothLorien () {
        elf = 'Galadriel'; 
        ranger = 'Strider';
        DWARF = 'Gloin'; // this will cause an error!
        let hobbit = 'Bilbo';
    }

    goToMountDoom(); 
    visitLothLorien();