Linux sends a signal to kill the parent process child process

 

 

#include <stdio.h> 
#include <stdlib.h> 
#include <SYS / types.h> 
#include <signal.h> 
#include <unistd.h> 

void Handler ( int Arg) 
{ 
    the printf ( " the receive the SIGCHLD \ n- " ); 
} 
int main ( int argc, const char * the argv []) 
{ 
    signal (the SIGCHLD, Handler); // registration signal callback function will be called when a signal occurs Handler 
    pid_t PID; 
    PID = the fork ();
     iF ( PID < 0 ) 
    { 
        perror ( "Fail the fork " ); 
        Exit ( . 1 ); 
    } 
    the else  IF (PID == 0 ) // child process 
    { 
        the while ( . 1 ) 
        { 
            the printf ( " Child \ n- " );
             SLEEP ( . 1 ); 
        } 
    } 
    the else // parent 
    { 
        sLEEP ( . 1 ); // sleep one second
         the kill (pid, the SIGKILL); // kill pid signal transmission process, kill transmission signal, process number to specify the other processes 
        the printf ( " Child killed \ n- " );

        printf ( " Father \ the n- " );
         the wait (NULL); // wait for recycling the child process 
        raise (SIGKILL); // kill their signal, sends a signal to their function raise 
    } 

    return 0 ; 
}

 test: