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From: ramsey@NCoast.ORG (Cedric Ramsey)
Newsgroups: comp.unix.xenix.sco
Subject: Catching Signals in 'C'
Message-ID: <1990Sep28.115700.17508@NCoast.ORG>
Date: 28 Sep 90 11:57:00 GMT
Organization: North Coast Public Access *NIX, Cleveland, OH
Lines: 24

Hello peoplekind. I have a question about the behavior of the
signal function. Firstly, I want to trap the control-c, break,
and other interrupt keys the user may use to stop a program.
I did this by ;

main()
{
  signal (SIGINT, (*handler1) ());
  signal (SIGQUIT, (*handler2) ());
  ... 
}


But, when I type a control-c the program handles the signal as
expected; however, when I type the control-c a second time the program 
doesn't catch it and simply exits. 

I don't know what went wrong. Does anybody outthere have any
thoughts or conjectures ? Any input is needed and desired.

Thanks,

Cedric A. Ramsey
Mail: ramsey@ncoast.ORG