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How to clear the content of a pipe (STDIN) after it is written to another program?

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Top Forums Programming How to clear the content of a pipe (STDIN) after it is written to another program?
# 8  
Old 05-14-2008
to clear out the left overs in STDIN....,

fflush(STDIN);

this should work. correct me if it is no the one which you are looking for...!!

-ilan
# 9  
Old 05-15-2008
fflush is undefined for reading. If this happens to work, that is great, but you cannot depend on programming by coincidence... Per C standard.

You have to read an input stream or socket to clear it.
# 10  
Old 05-15-2008
problem solved
There is high potential for me to get beaten up in this forum for what silly mistake i did, which was causing all the problem. But I know several people have looked in through this thread spending significant time in providing me the solution, and this is something I do not take it for granted.

This is what was causing the problem:

int StartPipe(iosockinet &s, char input_to_program_b[])
{
int fd1[2];
int fd2[2];
pid_t pid;
char line[MAXLINE];


I did not initialise the above char array to null;

char line[MAXLINE] = {0}; solved the problem.

Thank you so much guys, I learnt a lot from the information you guys provided me with.
Vivek
# 11  
Old 05-15-2008
Hi Jim,

just started with looking at threads to get started with programming C :-) now, after reading further on your comment i got to the problems that fflush can do...(ofcourse any functions that have unexpected anomalies)

Thanks!!

-ilan
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