SI204 – Lab 8
Strings. . . Arrays of Characters in Disguise
homework. Read the lab description below and the provided
starter program. Turn in a flowchart or pseudocode for EACH of the following functions
that will be needed to complete the program:
for the each function will likely be short, but remember that you are to focus on
the conceptually difficult parts of the program’s/function’s control flow
logic. Reminder: All pre-lab homework is due at the beginning of
the lab period, and late pre-lab homework will earn a grade of 0.
- This week you
have been studying the topic of arrays. As it turns out, you have
really been using arrays of characters all along but they were called strings.
- Thinking of a
string as an array of characters, the string Alpha might look like:
string Alpha =
- Like all
other arrays, notice that the subscripts for the elements of the array of
characters called Alpha, start with 0 (zero). The first element in the array
Alpha is in the 0th
cout << Alpha; // prints
an 'm' on screen
cout << Alpha; // prints
a '1' on screen
- A useful
function provided for use with strings is the length
function. This function returns number of characters contained in
the string. The value of this number will be one larger than the
last index position in the array.
Alpha.length(); // 7 is returned by the function length and prints
// on the screen
This function can be very useful as an upper bound in a for loop
when you are trying to print out or examine all the characters in a string.
for (int i=0; i<Alpha.length(); i++) // prints out
cout << Alpha[i];
Notice that we use '<' and NOT '<=' because Alpha is outside the
bounds of the indices of our array Alpha. Alpha only has
characters in index positions 0 .. 6.
- Your task for
today's lab is to complete this
program which simulates playing the
Wheel of Fortune game you may have seen on television. A word is
entered as the hidden puzzle word. The player of the game then
guesses letters one after the other trying ultimately to guess what the
hidden puzzle word is. As correct letters are guessed their
positions in the hidden puzzle word are revealed. (The Wheel of
Fortune game is similar to another game you may have played as a child
called Hangman, but is less violent.) Note that the program provided
above does not compile as some of the function return statements still
need to be completed.
- When you have
completed the functions as indicated in the program, build and run your
completed program and ensure that it works. Demo your program for
your instructor once you have it working correctly.
your game so that instead of asking for the puzzle word, it randomly selects a
word from this list of words.
your game so that you start with 7 points, then lose a point whenever you guess
a letter that does not exist in the puzzle word. If you run out of
points, you lose.
your game so that it can correctly handle a “puzzle word” that contains
multiple words (e.g. a string that contains spaces). How will you handle reading in such puzzle
words from a file?