Task - Menu-driven Calculator

[akash-coded]

Write a menu-driven program to implement a simple calculator. Ask the users to input two numbers and a choice of which operation to perform from the following menu: -

Choose an option:

1. Addition
2. Subtraction
3. Multiplication
4. Division
5. Quit

Display the results of the respective calculations. Print goodbye message when the user decides to quit.

[Wgjamia]

const operator = prompt('Enter operator ( either +, -, * ,/ or q to quit ): ');
const number1 = parseFloat(prompt('Enter first number: '));
const number2 = parseFloat(prompt('Enter second number: '));

let result;
function calc(op,num1,num2){
if (op == '+') {
result = num1 + num2;
}
else if (op == '-') {
result = num1 - num2;
}
else if (op == '*') {
result = num1 * num2;
}
else if (op == '/'){
result = num1 / num2;
}
else if (op == 'q'){
result =0;
}
return result
}
var calfun = calc(operator,number1,number2);
if (!calc(operator,number1,number2) == 0 ){
console.log(${number1} ${operator} ${number2} = ${calfun});
}else{
console.log("Goodbye");
}

[mha77]

window.alert("Hello to the Calculator");
var operation = prompt("Which Operation you want to make?\n1: Addition\n2:Subtraction\n3:Multiplication\n4:Division\n5:Quit")

operation = Number(operation);

if (typeof operation == "number"){
var a = prompt("Enter the first Number");
var b = prompt("Enter the second Number");

var a = Number(a);
var b = Number(b);
var result = null;
if(typeof a == "number" && typeof b == "number"){
    switch(operation) {
        case 1:
          result = a + b;
          break;
        case 2:
          result = a - b;
          break;
        case 4:
          result = a * b;
          break;
        case 5:
          result = a / b;
          break;
        default:
      }
}
if(result == null){
    window.alert("Please enter Numbers!\n Bye Bye");
}else{
    window.alert("The Result is: " + result + "\nBye Bye");
}

}else{
window.alert("Please enter Numbers!\n Bye Bye")
}

[ramprasana]

`function calculator() {
var num1 = prompt("Enter first number : ");
var num2 = prompt("Enter second number : ");
var operation = prompt("Please enter your option.... 1. Addition 2. Subtraction 3. Multiplication 4.Division 5. Quit");
switch(operation) {
case '1':

        console.log(Number(num1) + Number(num2));            
        break;
    case '2':
        console.log(Number(num1) - Number(num2));            
        break;
    case '3':
        console.log(Number(num1) * Number(num2));            
        break;
    case '4':
        if ( 0 === Number(num2)) {
            console.log("Cannot divide by zero");
            break;
        } else {
            console.log(Number(num1) / Number(num2));            
            break;    
        }
    case '5':
        console.log("Thanks you..bye");            
        break;
}

}`

[somitadubey]

Calculater

<script> window.alert("Hello to the Calculator"); let op = prompt("Operation list \n1: Addition\n2:Subtraction\n3:Multiplication\n4:Division\n5:Quit") op = Number(op);

    function calculater() {
        a = prompt(enter, number);
        b = prompt(enter, number);

        let c=null;
        if (typeof a == "op" && typeof b == "op") {
            switch (op) {
                case 1:
                    c = a + b;
                    break;
                case 2:
                    c = a - b;
                    break;
                case 4:
                    c = a * b;
                    break;
                case 5:
                    c = a / b;
                    break;
                default:
            }
        }
        if (c == null) {
            window.alert("Please enter Numbers!\n Bye Bye");
        } else {
            window.alert("The Result is: " + c + "\nBye Bye");
        }
    }
</script>

hi i tried but after options,, it is not giving output.

[koushik3107]

choice = prompt("Enter the type of operation you want to perfrom : +,-,/,* or q to quit");

if (choice == 'q'){
alert("Good Bye");
}
else{

if (choice == '+' || choice == '-' || choice == '/' || choice == '*'){
    num1 = parseFloat(prompt("Enter Number 1 : "))
    num2 = parseFloat(prompt("Enter Number 2 : "))
    
    if (choice=='+'){
        res = num1 + num2;
    }
    else if (choice=='-'){
        res = num1 - num2;
    }
    else if (choice=='/'){
        res = num1 / num2;
    }
    else if (choice=='*'){
        res = num1 * num2;
    }
    alert(res);
    
}
else{
    alert("Invalid input");
}

}

[Vibhaypandey]

<title>Menu-driven-calculater</title>

<h3 id = "begin">Hello user!</h3><hr>
<h4 id="opt">Option -</h4>
<div id = "btn">
<button id="pro" onclick="Addition()">Addition</button><button id="note" onclick="Substraction()">Substraction</button><button id="reno" onclick="Multiplication()">Multiplication</button><button id="plus"onclick=" Divide()">Divide</button><button id="edit"onclick="Quit()">Quit</button>
</div>
</div>
<script src="calculate.js"></script>

js file-- var num1; var num2;

var value;
function Addition(){
Input();
var sum = parseInt(num1)+parseInt(num2);
alert(sum);
}
function Substraction(){
Input();
var substract = (num1)-t(num2);
alert(substract);
}
function Multiplication(){
Input();
var multiplication = (num1)*(num2);
alert(multiplication);
}
function Divide(){
Input();
var divide = (num1)/(num2);
alert(divide);
}
function Quit(){
value = alert("Thank you! Bye");

}
function Input(){
num1 = prompt("Enter your first number :");
num2 = prompt("Enter your second number :");
}
css file --
body{
background-color: black;
}
#begin{
color: darkkhaki;
}
#opt{
color: darkkhaki;
}
#btn{
padding: 20px 10px 20px 45px ;
background-color: rgb(7, 114, 255);
margin: 20px 20px 20px 20px;

}
#pro{
background-color: rgb(189, 107, 107);
}
#note{
background-color: rgb(189, 107, 107);
}

#plus{
background-color: rgb(189, 107, 107);
}

#reno{
background-color: rgb(189, 107, 107);
}

#edit{
background-color: rgb(189, 107, 107);
}
#imp{
border: 1px solid rgb(234, 255, 47);
margin: 50px;
background-color: rgb(240, 0, 0);
padding: 50px;

}