Standard c I/O fflush () function

Fflush

Syntax:

# Include <stdio. h> int fflush (File * stream );

If the given file stream is an output stream, fflush () writes the content output to the buffer to the file. if the given file stream is of the input type, fflush () clears the input buffer. fflush () is useful for debugging, especially whenProgramWhen an error snippet occurs before the output to the screen, you can directly call the fflush (stdout) output to ensure that your debugging output can be output at the right time.

Printf ("before first call/N"); fflush (stdout); shady_function (); printf ("before second call/N"); fflush (stdout); dangerous_dereference ();