ast_comparator/test/student_data/handout/shlab-handout/cases/reference_21_tsh.c
/* 
 * sigint_handler - The kernel sends a SIGINT to the shell whenver the
 *    user types ctrl-c at the keyboard.  Catch it and send it along
 *    to the foreground job.  
 */
The kernel sends a SIGINT to the shell whenver the
user types ctrl-c at the keyboard.  Catch it and send it along
to the foreground job.
The kernel sends a SIGINT to the shell whenver the user types ctrl - c at the keyboard . Catch it and send it along to the foreground job .
void sigint_handler(int sig) 
{
    int fpid = fgpid(jobs);  
    if (fpid != 0)
    {
        kill(-fpid, SIGINT);
    }
    return;
}
void sigint_handler ( int sig ) { int fpid = fgpid ( jobs ) ; if ( fpid != 0 ) { kill ( - fpid , SIGINT ) ; } return ; }
sigint_handler - The kernel sends a SIGINT to the shell whenver the
    user types ctrl-c at the keyboard.
sigint_handler - The kernel sends a SIGINT to the shell whenver the user types ctrl - c at the keyboard .
// Check if any foreground process is running // Terminating signal of given process ID