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function of header file

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a_tek7

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Hi all.
I want to know that how I can see the code of each function of header files ,for example printf ?Is it possible?the codes of each function.
tanx
 

I assume you are talking about C.

If your compiler is open-source, such as GCC, then you can download all the source code from the compiler's distribution site.
If your compiler is a commercial product, then the company probably won't give you the source code.
 

Sure! Window$ or Linux user? Well.... assuming C code, ok?

Each function is "stored" inside xxxxx.h files, inside include directories. If you´re in linux, open a command line prompt and type, for exemple:

$> locate stdio.h

Try to view this file using any raw text editor, like vim, mcedit and so on. Then, you can find printf function and many others!

In window$, inside your compiler´s directory, find an include directory and take a look inside stdio.h
Good ideia to take a look at math.h and see how things work there!

See you!
 

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