To Prepare

Create a directory for this lab:

1. Start from your home directory
   
   
2. Change into your cs115 directory
   
   
3. Make a lab2 directory
   
   
4. Change into your lab2 directory

Practice Writing Code with Three Files and 2D Arrays

A gaming company wishes to test your knowledge of 2D Arrays. They have asked you to create a 5 x 5 "grid" with a "player" that you can move around in the space.

The 5x5 "grid" will be a 2-D integer array. Where the player is, the value in the 2-D array is 1. All other locations are 0.

You have been asked to code three functions and place them in a separate .cpp file from the main code (please call your file grid.cpp). The prototypes are:

void initialize(int [][5]);
void print_grid(int [][5]);
void move_player(int [][5]);     

Brief Descriptions of the Functions in grid.cpp

initialize:

1. cycle through the 2D array and set all the values to 0
2. put the player in the upper left hand corner.

print_grid:

1. cycle through the 2D array:
   1. where there is a 1, print an X to represent the player
   2. otherwise, print a 0

move_player:

1. prompt for and input the direction
2. prompt for and input the number of space to move
3. cycle through the 2D array until you find where the player is:
   1. reset the location to 0
   2. set the desired location to 1
   3. get out of the loops

What assumption have we made in the move_player code?

 

Description of main.cpp

1. initialize the grid
2. cycle 5 times,
   1. print the grid
   2. move the player
3. print the final grid

All these steps involve calls to functions.

Sample Run

Your current grid is....
X 0 0 0 0
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
Which direction would you like to move? n/s/e/w? s
How many spaces? 4
adjusting south
Your current grid is....
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
X 0 0 0 0
Which direction would you like to move? n/s/e/w? e
How many spaces? 3
adjusting east
Your current grid is....
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
0 0 0 X 0
Which direction would you like to move? n/s/e/w? n
How many spaces? 2
adjusting north
Your current grid is....
0 0 0 0 0
0 0 0 0 0
0 0 0 X 0
0 0 0 0 0
0 0 0 0 0
Which direction would you like to move? n/s/e/w? w
How many spaces? 1
adjusting west
Your current grid is....
0 0 0 0 0
0 0 0 0 0
0 0 X 0 0
0 0 0 0 0
0 0 0 0 0
Which direction would you like to move? n/s/e/w? e
How many spaces? 2
adjusting east
Your final grid is....
0 0 0 0 0
0 0 0 0 0
0 0 0 0 X
0 0 0 0 0
0 0 0 0 0