Swift 2

//
//  File.swift
//  Zad2.1
//

import Foundation

let rokAktualny = 2022
var rok: String
var rokW: Int = 0
var lata: Int

print("Podaj rok urodzenia:")
rok=readLine()!
//rokW = Int(readLine()!)!

if let rU = Int(rok){
    rokW = rU
}

lata = rokAktualny - rokW //Int(rok)!
print("Masz \(lata) lat")

/////////////////////////////////////////////////////////////////

//
//  File.swift
//  Zad2.2
//

import Foundation

let pi: Double = 3.14
var r: Double
var Obw: Double = 0
var P: Double = 0

print("Podaj promien:")
r = Double(readLine()!)!

P = pi * pow(r, 2)
Obw = 2 * pi * r

let P2 = String(format: "%.2f", P)
let Obw2 = String(format: "%.2f", Obw)

print("Kolo o promieniu \(r) ma pole \(P2) i obwod \(Obw2) .")

///////////////////////////////////////////////////////////////////

//
//  File.swift
//  Zad2.3
//

import Foundation

var a: Double
var V: Double = 0
var Pc: Double = 0

print("Podaj bok:")
a = Double(readLine()!)!

Pc = 6 * pow(a, 2)
V = pow(a, 3)

let Pc2 = String(format: "%.2f", Pc)
let V2 = String(format: "%.2f", V)

print("Szescian o boku \(a) ma pole \(Pc2) i objetosc \(V2) .")

///////////////////////////////////////////////////////////////////////

//
//  File.swift
//  Zad2.4
//

import Foundation

var a: Double = 0
var b: Double = 0
var s: Double = 0
var z: Double = 0
var cenaM: Double = 0
var x: Double = 0
var cenaC: Double = 0

print("Podaj a:")
a = Double(readLine()!)!
print("Podaj b:")
b = Double(readLine()!)!
print("Podaj z:")
z = Double(readLine()!)!
print("Podaj s:")
s = Double(readLine()!)!
print("Podaj cene za metr:")
cenaM = Double(readLine()!)!

x = 2 * (a+b) + 2 * (z + b) - 3 * s
cenaC = cenaM * x

let cenaC2 = String(format: "%.2f", cenaC)
let x2 = String(format: "%.2f", x)

print("Dlugosc listwy z tych wymiarow to: \(x) a jej cena calkowita to \(cenaC) .")

///////////////////////////////////////////////////////////

//
//  File.swift
//  Zad2.5, 2.6
//

import Foundation

var a: Int = 0
var b: Int = 0
var c: Int = 0
var wag1: Int = 1
var wag2: Int = 2
var wag3: Int = 3
var sredA: Double = 0
var sredB: Double = 0

a = Int.random(in:1..<10)
b = Int.random(in:1..<10)
c = Int.random(in:1..<10)

sredA = (Double(a+b+c) / 3)
sredB = (Double)(a*wag1 + b*wag2 + c*wag3) / (Double)(wag1 + wag2 + wag3)

let sredA1 = String(format: "%.2f", sredA)
let sredB1 = String(format: "%.2f", sredB)

print("Srednia 1 to \(sredA1) a srednia 2 to \(sredB1) .")