Statement of work

[izemlyanskiy]

You're given the task of writing a simple console version of a drawing program.
In a nutshell, the program should work as follows:

1. Create a new canvas
2. Start drawing on the canvas by issuing various commands
3. Quit

Command	Description
C w h	Should create a new canvas of width w and height h.
L x1 y1 x2 y2	Should create a new line from (x1,y1) to (x2,y2). Lines will be drawn using the 'x' character.
R x1 y1 x2 y2	Should create a new rectangle, whose upper left corner is (x1,y1) and lower right corner is (x2,y2). Horizontal and vertical lines will be drawn using the 'x' character.
B x y c	Should fill the entire area connected to (x,y) with "colour" c. The behaviour of this is the same as that of the "bucket fill" tool in paint programs.
Q	Should quit the program.

Sample I/O

Below is a sample run of the program. User input is prefixed with "Input command:"

Input command: c 20 4
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|                    |
|                    |
|                    |
|                    |
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Input command: l 0 2 19 2 
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|                    |
|                    |
|xxxxxxxxxxxxxxxxxxxx|
|                    |
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Input command: b 0 0 a
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|aaaaaaaaaaaaaaaaaaaa|
|aaaaaaaaaaaaaaaaaaaa|
|xxxxxxxxxxxxxxxxxxxx|
|                    |
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Input command: q

[izemlyanskiy]

done!