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I would like to create a calculator, except that, I want to avoid 2 inputs on each case.

For example:

case 1 : console.log("Option 1 - Addition ");
         var number1 = readline.questionInt("Enter number 1 please : ");
         var number2 = readline.questionInt("Enter number 2 please : ");
         ....
break;
case 2 : console.log("Option 2 - Substraction ");
         var number1 = readline.questionInt("Enter number 1 please : ");
         var number2 = readline.questionInt("Enter number 2 please : ");
         ....
break;

I created a function named inputUser() to enter each time 2 numbers in each case.

function inputUser(){
    var number1 = readline.questionInt("Enter number 1 please : ");
    var number2 = readline.questionInt("Enter number 2 please : ");
    return number1, number2;
}

My problem is that in my case 1, I don't retrieve the correctly result. I have as error message NaN.

... 
switch(choice){

        case 1 : console.log("Option 1 - Addition ");
                 inputUser();
                 var add = addition();
                 console.log("The resultat is " + add);
        break;

        case 2 : console.log("Option 2 - Substraction ");
                 inputUser();
                 var sub = substraction();
                 console.log("The resultat is " + sub);
        break;
    }
    ...

My 3 functions are here:

function inputUser(){
    var number1 = readline.questionInt("Enter number 1 please : ");
    var number2 = readline.questionInt("Enter number 2 please : ");
    return number1, number2;
}

function addition(){
    var nb1, nb2;
    var result = (nb1+nb2);
    return result;
}

function subtraction(){
    var nb1, nb2;
    var result = (nb1-nb2);
    return result;
}

Thank you very much for your help because I am stuck.

augustin1340
  • 47
  • 6
  • Even if returning multiple values worked like that, you never assign the result to the variables `nb1` and `nb2`. How do you expect that to work? – Barmar Mar 19 '21 at 15:50
  • A few things, you're completely ignoring the result of `inputUser` and never passing any values to your 2 methods. Also the word is "Subtraction" not "Substraction" – Jamiec Mar 19 '21 at 15:51

0 Answers0