How do I call a function from another file?

In MainView.m I have one function -(void)goTell;
I want to be able to call the function from SecondView.m. How do I do this?
I have declared the function in the MainView.h and added #include MainView.h to SecondView.m, but it still doesn't work.
This code crashes my program (for some reason this board takes away my brackets... assume the code is written correctly):
[[MainView alloc] init];
MainView *myMainView;
[myMainView goTell];
By the way... goTell has nothing in it. It's just a blank function for testing purposes.
Ethan

BTW - Wrap your code like this in posts tags so it stay readable.
put code here
Your code needs to be:
MainView *myMainView = [[MainView alloc] init];
[MyMainView goTell];

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