Homework5/index.js

//a
function a() {
    alert("Привет, Вася")
}


//cube
function cube(b) {
   return b = b ** 3
    
}


//avg2
function avg2(a,b) {
    return (a+b)/2
}


//sum3
function sum3(a, b, c) {
 a = a || 0
 b = b || 0
 c = c || 0
  let g =  a + b + c
    return g
}

//intRandom
function intRandom(a, b) {
    
    if (b === undefined) {
        z = Math.round(Math.random()*a) 
    } else {
        z =   ((Math.round(Math.random() * (b - a))+a))
    }
       
    return z
}


//greetAll  других вариантов не нашел

let p = ""
function greetAll() {
    for (i = 0; i < arguments.length; i++){
        p = p + " " + arguments[i]
        
    }
    p
    alert(`Hello, ${p}`)
}

//sum

let sum1 = 0
function sum() {
    for (i = 0; i < arguments.length; i++){
        sum1 += arguments[i]
    }
    return
}


//Union

let challenge = prompt("Enter which task")
switch (challenge.toLowerCase()) {
    case 'a':  a()
        break
    case 'cube': cube(5)
        break
    case 'avg2': avg2(a,b)
        break
    case 'sum3': sum3(a, b, c)
        break
    case 'intRandom': intRandom(a, b)
        break
    case 'greetAll': greetAll()
        break
    case 'sum': sum()
        break
}



//Union declarative



function aSemple() {
    return a()
}

function cubeSemple() {
    return cube(5)
}

function avg2Semple() {
    return avg2(5,10)
}

function sum3Semple() {
    return sum3(5,6,8)
}

function intRandomSemple() {
    return intRandom(2,20)
}

function greetAllSemple() {
    return greetAll('VAsa', 'Sisa', 'Popa')
}

function sumSemple() {
    return sum(1,2,3,4,5,6)
}



let unionDeclarative = {
    a: aSemple(),
    cube: cubeSemple(),
    avg2: avg2Semple(),
    sum3: sum3Semple(),
    intRandom: intRandomSemple(),
    greetALL: greetAllSemple(),
    sum: sumSemple()
    
}


let quiestion = prompt('Enter which task', 'task')
alert( unionDeclarative[quiestion] )