This is my error code now:
1>------ Build started: Project: BREAKOUT, Configuration: Debug Win32 ------
1> stdafx.cpp
1> Ball.cpp
1>c:\users om\documents\visual studio 2010\projects\breakout\ball.cpp(38): error C2065: 'Blocks' : undeclared identifier
1>c:\users om\documents\visual studio 2010\projects\breakout\ball.cpp(38): error C2228: left of '.GetCollision' must have class/struct/union
1>c:\users om\documents\visual studio 2010\projects\breakout\ball.cpp(38): error C2065: 'Blocks' : undeclared identifier
1>c:\users om\documents\visual studio 2010\projects\breakout\ball.cpp(38): error C2228: left of '.GetIsHit' must have class/struct/union
1>c:\users om\documents\visual studio 2010\projects\breakout\ball.cpp(41): error C2065: 'Blocks' : undeclared identifier
1>c:\users om\documents\visual studio 2010\projects\breakout\ball.cpp(41): error C2228: left of '.SetIsHit' must have class/struct/union
1> BREAKOUT.cpp
1>c:\users om\documents\visual studio 2010\projects\breakout\breakout.cpp(29): warning C4244: 'argument' : conversion from 'int' to 'float', possible loss of data
1>c:\users om\documents\visual studio 2010\projects\breakout\breakout.cpp(29): warning C4244: 'argument' : conversion from 'int' to 'float', possible loss of data
1>c:\users om\documents\visual studio 2010\projects\breakout\breakout.cpp(34): warning C4244: 'argument' : conversion from 'int' to 'float', possible loss of data
1>c:\users om\documents\visual studio 2010\projects\breakout\breakout.cpp(34): warning C4244: 'argument' : conversion from 'int' to 'float', possible loss of data
1>c:\users om\documents\visual studio 2010\projects\breakout\breakout.cpp(39): warning C4244: 'argument' : conversion from 'int' to 'float', possible loss of data
1>c:\users om\documents\visual studio 2010\projects\breakout\breakout.cpp(39): warning C4244: 'argument' : conversion from 'int' to 'float', possible loss of data
1>c:\users om\documents\visual studio 2010\projects\breakout\breakout.cpp(43): warning C4244: 'argument' : conversion from 'int' to 'float', possible loss of data
1>c:\users om\documents\visual studio 2010\projects\breakout\breakout.cpp(43): warning C4244: 'argument' : conversion from 'int' to 'float', possible loss of data
1> Generating Code...
1> Skipping... (no relevant changes detected)
1> Paddle.cpp
1> Block.cpp
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
(Ignore the conversion problems, that's not a real bug it happens for a reason!)

I fixed it so those errors aren't happening, but now it gives me the same 0xccccccd0 exception error?

Dang, I'm so glad I wrote some error code that prints out if the block I'm printing on is uninitialized. I was acting on a block that was uninitialized. Now to figure it out.

Okay, the problem was that I was starting at Blocks[20], which meant that it was not calling the function correctly, and luckily I TOLD it to print out an error message if I did that, but I just forgot about it. #facepalm

I fixed it, I'm sorry I tried to do that, but it didn't work because that wasn't the problem. Sorry.
EDIT: I don't understand why I didn't just make the array of blocks member variables of the ball class, considering the ball was going to be the only other object interacting with them. My next goal: Change the code to make the Block array part of the ball class.