Build a calculator using switch:
let a = 10
let b = 5
let operator = "+"
let result
switch (operator) {
case "+": result = a + b; break
case "-": result = a - b; break
case "*": result = a * b; break
case "/":
if (b === 0) {
console.log("Cannot divide by zero")
} else {
result = a / b
}
break
default:
console.log("Unknown operator")
}
if (result !== undefined) {
console.log(`${a} ${operator} ${b} = ${result}`)
}