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I have the following code in C: void sighandler(int sig) {      printf("exiting child..."); } int...

I have the following code in C:

void sighandler(int sig)

{

     printf("exiting child...");

}

int main(int argc,char* argv[])

{

     if(argc > 1)

     {

           char* commandName;

           for(int i=2;i

           {

                  forkChild = fork();

                  signal(SIGINT,sighandler);

                  if(forkChild == 0)

                  {

                         execlp(commandName,commandName,argv[i],NULL);

                         exit(0);

                  }

                  else

                  {

                         wait(NULL);

                  }

      }

My problem is that I would like to kill the child with ^C but leave the parent running. Does interrupting with cntrl- c always terminate the entire program? How can I just close the child but leave the loop open?

Thanks

engineering   Computer-Science   
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Answer #1

fork() will return a -1 if it cannot create a child and a 0 in parent and a value greater than 0 in parent which is the pid of child. here in this program, forkChild is used to store the returned value from fork(). so you can use kill(forkChild,SIGKILL);

to kill the child. you need to use the header #include<signal.h> while using SIGKILL to kill the child.

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