Question

Swift program: Develop an app that is a Number Guessing Game, (ex: one that allows a player to guess a number between a high and a low number, say between 1 and 10) with the system guiding the player by indicating whether the number is too high or too low after an incorrect guess. This process is repeated until the player correctly guesses the number or simply quit your app. For simplicity purposes, assume the magic number to be guessed is always 6.

Answer 1

// Screenshot with output in Xcode

// Code with comments

import Foundation

// use arc4random_uniform(10) to take random number upto upper limit of 10

let secretNumber = arc4random_uniform(10)

var turnNo = 1 // to count number of tries you made in guessing

// this loop will run until user gusses correctly.

while(true)

{

print("Guess number \(turnNo): Enter number between 1 an 10.")

let stringInput = readLine(strippingNewline: true) // reading input from keyboard

let intInput = Int(stringInput!) // Type casting string input to integer type

if let guess = intInput // if input is valis then store in guess variable

{

if(guess > secretNumber)

{

print("Number was too high")

}

else if(guess < secretNumber)

{

print("Number was too low")

}

else

{

print("Hurray! You guessed correct. It was : \(secretNumber)")

break

}

}

else{ // The number was invalid so display error message and continue

print("Invalid! Please enter the number again :")

continue

}

turnNo = turnNo + 1 // increment tries by 1 each time you guessed incorrect

}

print("It tooks \(turnNo) tries to guess the correct one")