letfunction2.js

function add(...theArgs){

    var result = 0; 
    for(let i=0;i<theArgs.length;i++){
        result = result + theArgs[i];
    }
    return result; 
}

var r = add(6,9,3,2);
console.log(r);
var t = add(7,56,9);
console.log(t);