Data Structures Using C, 2nd Edition by Pearson

32 Data Structures Using C

When the header file stdio.h is included in a program, the following standard stream pointers are

automatically opened:

Name Meaning

stdin standard input

stdout standard output

stderr standard error

stdaux auxiliary storage

stdprn printer

In the computer, ‘stdin’ and ‘stdout’ refer to the user’s console, i.e., input device as keyboard

and output device as VDU (screen). The stream pointers ‘stdprn’ and ‘stdaux’ refer to the printer and

auxiliary storage, respectively. The error messages generated by the stream are sent to standard error

(stderr).

In order to clear the buffers, a function called ‘fflush()’ can be used. ...