MATLAB Programming worksheet 4

Q1. while loops

a) Write a script that asks for a series of numbers and calculates the sum and the mean. When the user enters a value of 0, the script stops and performs the calculation. For example:

Enter a number (type 0 to end) : 5

Enter a number (type 0 to end) : 6

Enter a number (type 0 to end) : 7

Enter a number (type 0 to end) : 8

Enter a number (type 0 to end) : 0

4 numbers entered. Sum=26. Mean=6.5.

b) Write a script which allows the user to play the "what number am I thinking of?" game. Your script should do the following :

- generate a random integer between 0 and 100 (use the rand(n) function)

- keeps asking the user for another guess if they are incorrect

- allows the user to quit by entering a number outside the range 0 to 100

- tells the user if their guess is too high or too low

- tells the user if they are getting close (within 5 on either side)

- keeps count of how many guesses have been made

- tells the user when they have guessed correctly and how many guesses they made

(see example output screen below)

Example Output Screen :

WELCOME TO GUESS-A-NUMBER

I am thinking of a number between 0 and 100 Please enter a guess (any number outside this range to quit

Make a guess : 50

Too High, another try?

Make a guess : 12

You are getting close but ... Too Low, have another go.

Make a guess : 16

You guessed my number and it only took you 3 tries!