Visual c++ file relations

use header files. basically, for each .cpp file you have that defines functions and classes that will be used somewhere else, you put the prototype of the function or class in the .h file.

// testfile.cpp class SomeClass { // class stuff (private variables, functions, et cetera) }; int SomeFunc(int SomeArg) { // do stuff, return an integer };

then:

// testfile.h class SomeClass; int SomeFunc(int);

then, in any .cpp file that uses the functions or classes, you include the header file:

// otherfile.cpp #include "testfile.h"; int main() { SomeClass feh; int Foo; return SomeFunc(Foo); };

header files basically are just inserted into the source code before it is compiled, so they are used to define prototypes from other source files...
better now?

--- krez (krezisback@aol.com)

EDIT -- the source tags take out carriage returns? i had to put a semicolon after my include above, because main was being attached to the previous line... weird...

Edited by - krez on November 27, 2001 10:49:50 PM

Ya, for sure.

Thanks a lot.

Hey, Some more questions for all of ya.

.cpp files in a program can access global variables of other .cpp files, right??? Should I define my globals in the certain .cpp file''s header, or just in the program''s .cpp.

Thanks
kevin

First off the answer would be to create a new header, and call it something like global.h. This file contains all global vars and functions.

But basically globals point in a direction of not so great design. Not that you can avoid globals at all time, but in a pure OO world there aren''t anything like a global variable. Remember that all variables belong to a class, so at max you would have a global class, which you instantiate in your main method, and from there on just passed as a parameter to whomever needs it.

-- Sturm

Ok...

So should I put all of the global variables for the application in a class in a global.h file???

Kevin

quote:

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Original post by superk
So should I put all of the global variables for the application in a class in a global.h file???

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Yes and no. Look up the extern keyword.

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Start Here!

quote:

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Original post by superk
Ok...

So should I put all of the global variables for the application in a class in a global.h file???

Kevin

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Put them in the recycle bin and redesign your app not to use globals.



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