CS60 Homework Assignment 4
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Due Mon Oct 6th, 1:00pm

Write a simple paint program that draws a 10x10 character palette to
the screen and allows a use to input a character to draw and (x,y)
coordinates specifying the position of the new character.  The program
should have the following high level structure:

initialize palette array with '_' characters
initialize input character variable to something other than '!'

while the inputted character is not equal to '!'
	draw palette
	ask user for a character to draw
	ask user for coordinates for new character

At a minimum, the 'draw palette' step must be implemented as a
function that takes as a parameter the 10x10 array and draws the
contents of the array.  You may choose to write other functions, but
you must at least write the draw palette routine as a function.

When the user inputs a '!' character, with any coordinates, the
program should exit.  HINT: watch out for the scanf problem where the
newline from one scanf (the coordinate scanf) falls through to the
input of the next (when the loop returns to asking for an input
character)!

Turnin
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The turnin tag for this assignment is 'hw4'.  Please include the code,
a README if required, and a typescript showing at least 4 moves
followed by the exit move.

Sample Output
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[nurmi@localhost hw4]$ gcc hw4.c; ./a.out
_ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ 
Enter a character to draw: @
Enter X,Y coordinates (x,y): 0,0
@ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ 
Enter a character to draw: $
Enter X,Y coordinates (x,y): 3,9
@ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ $ 
_ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ 
Enter a character to draw: $
Enter X,Y coordinates (x,y): 2,2
@ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ 
_ _ $ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ $ 
_ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ 
Enter a character to draw: *
Enter X,Y coordinates (x,y): 2,9
@ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ 
_ _ $ _ _ _ _ _ _ * 
_ _ _ _ _ _ _ _ _ $ 
_ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ 
Enter a character to draw: r
Enter X,Y coordinates (x,y): 2,6
@ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ 
_ _ $ _ _ _ r _ _ * 
_ _ _ _ _ _ _ _ _ $ 
_ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ 
_ _ _ _ _ _ _ _ _ _ 
Enter a character to draw: !
Enter X,Y coordinates (x,y): 0,0
[nurmi@localhost hw4]$