open , read and extract some data from a CVS File and then write the extracted data in a new CVS or TxT file

[SafaDev]

Hello everyone, 

I have to open ,read , extract data and modify its format   from many cvs files. Then I have to write or copy the extracted data into a new txt/cvi File.

I've read,opened and extracted some data in a Buffer but I couldn't write them in the txt file created at the beginning .So that I need your help.

ps: I didn't really get how the function "WriteFile" does work 

thank you in advance 

[RobertoBozzolo]

Why are you calling WriteFile at all? An output buffer is written to disk when the file is closed and you have an fclose at the end of the code: isn't it writing the file? Throw all those WriteFile away: they are meaningless (and the compiler should complain about you passing a string instead of a file handle to them!).

WriteFile is more or less the same as fputs, but as a general rule you cannot mix functions from ANSI C and Formatting and I/O libraries: if you open a file with fopen you cannot the operate on it with WriteFile since ANSI C library uses FILE * handles while Formatting and I/O handles are simply integer values.