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Thanks, I am still investigating (this and much more).

So it seems it is the way you open the file that determines whether the new stuff will overwrite what is there or be appended to it.
I have been using;
FILE *fp=fopen(filename,"w");
fputc('q',fp);...

Hi,
fputc() will overwrite from the beginning of the target file.
How would I append characters to the target file's end instead?
Thanks.

Does anyone know of a good TclTk forum?

Thanks. I will check it out.

I am using curses.h and signals.h to control output to screen. My code displays an unchanging prompt that waits for user input. Meanwhile alarm signals are being generated that cause other ancillary...

Thanks for the tips.

What is the difference between using exit(0) and exit(1) to exit a program? Which should I use?

I had an alarm signal interrupting the sleep() function.

I have a function that quits a program when <ctrl>c is entered as per following code;
void quitter (void)
{
clear ();
mvprintw (QUITTER_ROW, QUITTER_COL, "Quitting...");
refresh ();
...

Could you please explain the purpose of the following statement;

Why does the program contain no prototype of this function?
Further, I do not understand what it does or how. Thanks.

Thanks for your effort. I must admit your code is a bit beyond my capabilities at the moment, however I will examine it and learn. I was hoping I could just slot a getchar() statement in somewhere...

I am not sure if multi threading is the correct term, but here is what I am trying to do. I have a while loop that displays the number 1, pauses, displays the number 2, pauses , displays the number 3...

Thanks very much, problem solved.

Thanks again. I will sift through your code. There is much for me to learn in there.

My program usage takes the form for example;
$ theApp 2 "one or more words"

i.e. 3 command line arguments; application name, an integer, some text

My code includes the following 4 lines:
...

OK thanks, I will look into this issue.

Thanks a lot. I am a beginner as you can see. I am transitioning from fundamental C++ to fundamental C.

Thanks very much to all. I have a project in mind and this forms a piece of it. I will forge ahead now. You have helped me understand how to implement alarms and signals.

Thanks again. Further to this, why is "void" used as a parameter in a function that takes no arguments, i.e.
int main (void)

I see this a bit in C (I started out learning C++) , why not just use...

Thanks a lot. matrixmadhan your code almost works perfectly. The only thing it doesn't do is loop infinitely between "The ALARM...." and "Snoozing.....".

It starts by displaying "Snoozing....."...

I am trying to write a program that will;
1) Show the message "Snoozing now...zzzz" on the screen for 5 seconds
2) Then in the same position show the message "The ALARM is going off now!" for 5...

Thanks very much. One question, does main() have to have a return type?
I now have
int main()
could this just have easily been
void main()
?
I think this is what I originally intended.

I am trying to learn how to use multiple modules and hearder files. I have tried a little experiment but cannot get it to work. Here is my code and compilation attempt. Any help with finding my...

[me@myisp me]$ uname -a
Linux myisp.net.au 2.6.3-7mdk #1 Wed Mar 17 15:56:42 CET 2004 i686 unknown unknown GNU/Linux

I use Mandrake 10 Linux.