The fflush function 1

[mattias1975]

Hello!

When should i use the fflush function?
When i read characters from the keyboard, from a file?
Should i call it before i call for example getchar or after?
What does it actualy do?

 

[Salem]

> When should i use the fflush function?
Between writing a file and reading a file is the most common use.

> When i read characters from the keyboard, from a file?
> Should i call it before i call for example getchar or after?
If you're thinking of calling fflush(stdin); then you're way off base.
fflush() only works for
- output streams
- update streams where the most recent action was output.
These are the only options supported by the standard.

Some compiler vendors appear to do something for stdin, but beware that such use is NON-standard. So don't complain when it stops working.

> What does it actualy do?
Read the manual page for fflush()

--