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Full Discussion: How to skip getchar in C?
Top Forums Programming How to skip getchar in C? Post 302458731 by cprogdude on Friday 1st of October 2010 02:38:50 PM
Old 10-01-2010
How to skip getchar in C?

Hi,
I would like to read an input from keyboard using getchar. However, if no input (No Carriage return/new line none whatsoever) is given after say, 5 seconds, I would like to skip the getchar and move on. How do I do this in C. I'm using GNU compiler set.


Thanks,
 

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GETC(3S)																  GETC(3S)

NAME
getc, getchar, fgetc, getw - get character or word from stream SYNOPSIS
#include <stdio.h> int getc(stream) FILE *stream; int getchar() int fgetc(stream) FILE *stream; int getw(stream) FILE *stream; DESCRIPTION
Getc returns the next character from the named input stream. Getchar() is identical to getc(stdin). Fgetc behaves like getc, but is a genuine function, not a macro; it may be used to save object text. Getw returns the next word from the named input stream. It returns the constant EOF upon end of file or error, but since that is a good integer value, feof and ferror(3) should be used to check the success of getw. Getw assumes no special alignment in the file. SEE ALSO
fopen(3), putc(3), gets(3), scanf(3), fread(3), ungetc(3) DIAGNOSTICS
These functions return the integer constant EOF at end of file or upon read error. A stop with message, `Reading bad file', means an attempt has been made to read from a stream that has not been opened for reading by fopen. BUGS
The end-of-file return from getchar is incompatible with that in UNIX editions 1-6. Because it is implemented as a macro, getc treats a stream argument with side effects incorrectly. In particular, `getc(*f++);' doesn't work sensibly. GETC(3S)
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