title: Ignore SIGINT signal in child process
body: <p>I am writing a simple program in which parent and child process are alternatively printing into a file. I have managed to do this using user defined signals. Now I want to handle the <code>SIGINT</code> signal. Once <kbd>ctrl-c</kbd> is received the parent must send termination signal to child,the child should then should terminate and finally the parent should terminate.</p>
  
  <p>My question is, in order to make this work properly I must catch the <code>SIGINT</code> signal ONLY from parent and IGNORE it from child. Is it right? If yes any hints on doing this?</p>