Clearning file contents

[Harish]

I am doing file operations using fopen(),
fwrite(), fclose() group of functions.
At times I need to clear the file contents while
the file is open.
Is there a function in the same group to do it?
(Or a workaround other than closing and
reopening the file in write mode?)
--Harish

 

[CPallini]

I am doing file operations using fopen(),
fwrite(), fclose() group of functions.
At times I need to clear the file contents while
the file is open.
Is there a function in the same group to do it?
(Or a workaround other than closing and
reopening the file in write mode?)
--Harish

Goto the very beginning of the file by means of the _lseek() function.

 

[Ben Voigt [C++ MVP]]

I am doing file operations using fopen(),
fwrite(), fclose() group of functions.
At times I need to clear the file contents while
the file is open.
Is there a function in the same group to do it?

_get_osfhandle and SetEndOfFile
http://msdn2.microsoft.com/en-us/library/aa365531.aspx