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Thanks for all of you~
I can shoot the problem with the (*bmp)...
Thanks very much.

Hi..Thanks for your reply..
I have attached the code and the function in the post...
may be I upload once more..if it still couldn't been seen...please let me know..and I upload it as...

Hi all.
I am a beginner of C and try to write C to export a "0" character to a BMP(called abc.bmp and abc_mod.bmp in my program).

I have wrote a function to write a "0" but I don't know why there...

Thanks for your reply.

For the code, do I need to include <allegro.h> because putpixel is a function in the library.So, is allegro.h a basic library in C or the library that I need to download and...

Hi all, I am a beginner of C and I would like to try to plot a sin and cos curve with changing amplitude and frequency.Then, save them to a bmp file.

I have searched some information about...