CS112: Lab 6 :: Functions and loops

Task 1a. A guessing game

Write a script called playGuess to play a guessing game with the user. Your loop will keep asking for 7 guesses until the user either 1) guesses correctly, 2) quits or 3) runs out of guesses. Sample output is shown below.
Hints:

• randi([1,100]) generates a random integer between 1 and 100, inclusive.
• input('Guess the secret number (q to quit) ==> ','s') allows for string input
• Think about the different ways the game can end and how to handle those cases.

  
  Example 1: the secret number is 1 and the user quits (by typing 'q')
  
 >>playGuess  
   Guess the secret number (q to quit) ==> 50
   Too high
   Guess the secret number (q to quit) ==> 12
   Too high
   Guess the secret number (q to quit) ==> 5
   Too high
   Guess the secret number (q to quit) ==> q
   bye!

  
  Example 2: the secret number is 73 and the user wins in 3 guesses.
  
 >>playGuess  
   Guess the secret number (q to quit) ==> 50
   Too low
   Guess the secret number (q to quit) ==> 75
   Too high
   Guess the secret number (q to quit) ==> 73
   Wahooo! You won in 3 guesses

  
  Example 3: the secret number is 47 and the user runs out of guesses  
 >>playGuess   
   Guess the secret number (q to quit) ==> 80
   Too high
   Guess the secret number (q to quit) ==> 75
   Too high
   Guess the secret number (q to quit) ==> 60
   Too high
   Guess the secret number (q to quit) ==> 50
   Too high
   Guess the secret number (q to quit) ==> 40
   Too low
   Guess the secret number (q to quit) ==> 45
   Too low
   Guess the secret number (q to quit) ==> 46
   Too low
   Sorry, you used all 7 of your guesses.

 

Task 1b. Create a function called guessMyNumber

Create a new MATLAB file with the name guessMyNumber. Building from the contents of the playGuess script above, create a function that has an optional input (the maximum number of guesses). If the user does not supply an argument, the default guess limit is 7.

>> guessMyNumber(1)
Guess the secret number (q to quit) ==> 25
Too low
Sorry, you used all 1 of your guesses.

>> guessMyNumber(3)
Guess the secret number (q to quit) ==> 50
Too low
Guess the secret number (q to quit) ==> 75
Too high
Guess the secret number (q to quit) ==> 62
Too low
Sorry, you used all 3 of your guesses.

>> guessMyNumber()
Guess the secret number (q to quit) ==> 50
Too low
Guess the secret number (q to quit) ==> 75
Too high
Guess the secret number (q to quit) ==> 60
Too high
Guess the secret number (q to quit) ==> 57
Too low
Guess the secret number (q to quit) ==> 58
Too low
Guess the secret number (q to quit) ==> 59
Wahooo! You won in 6 guesses