// a
function a() {
   alert('Привет');
}
a()

// cube
function cube() {
   console.log(prompt('number') ** 3);
}
cube()

// avg2
function avg2(a, b) {
   console.log((a + b) / 2);
}
avg2(5, 10)
avg2(1, 2)

// sum3
function sum3(a, b, c) {
   a = a || 0;
   b = b || 0;
   c = c || 0;
   return a + b + c;
}
console.log(sum3(1, 2, 3))
console.log(sum3(5, 10, 100500))
console.log(sum3(5, 10))

// intRandom
function intRandom(min, max) {
   min = min || 0;
   max = max || 0;
   let result = Math.random() * (max - min) + min;
   return Math.round(result)
}
console.log(intRandom(2, 15))
console.log(intRandom(-1, -1))
console.log(intRandom(0, 1))
console.log(intRandom(10))

// greetAll
function greetAll(...arguments) {
   for (let arg of arguments) {
      alert(`Hello ${arg}!`)
   }
}
greetAll("Superman")
greetAll("Superman", "SpiderMan")
greetAll("Superman", "SpiderMan", "Captain Obvious")


// sum
function sum(...arguments) {
   let result = 0
   for (let arg of arguments) {
      result += arg

   }
   console.log(result)
}
sum(1)
sum(2)
sum(10, 20, 40, 100)

// Union