app.js

'use strict';
function(){
    let username = prompt ('Hello, could you please enter your name ');
    console.log(username);
    console.log(typeof username);
}

username();
function(){
let age = prompt ('Hello, could you please enter your name '  );
console .log(age);
console.log( typeof age );
}
age();

//Iwant to change the prompt data from string to number
age=Number(age);
console.log(age);
console.log(typeof age);
console.log(age + 12);

if (age ===18 ){
    alert('you are 18');
}else if (age > 18 ){
    alert('you are welcome');
}else{
    alert('you cant b/c your are too young');

}

 case true :

document.write('have a nice day ');
break;
 
case false 
 document.write('do you write homework ');
 break;