# include <stdio.h>
int main()
{    
    int pid;
    pid=getpid();
    
    printf("Current Process ID is : %d\n",pid);

    printf("[ Forking Child Process ... ] \n");    
    pid=fork(); /* This will Create Child Process and
               Returns Child's PID */
if(pid < 0)
    {
        /* Process Creation Failed ... */

        exit(-1);
    }
    elseif(pid==0) 
    {
        /* Child Process */

        printf("Child Process Started ...\n");
        printf("Child Process Completed ...\n");
        
    }
    else 
    {
        /* Parent Process */

        sleep(10);
        printf("Parent Process Running ... \n");
        printf("I am In Zombie State ...\n");
        while(1)
        {
            /* 
                Infinite Loop that Keeps the
                   Process Running
            */

        }
    }    
    return 0;
}

/* Output

[divyen@localhost PP-TW1]$ ./Prog01-Z &
[1] 2320
Current Process ID is : 2320
[ Forking Child Process ... ]
Child Process Started ...
Child Process Completed ...
[divyen@localhost PP-TW1]$ ps -l
F S   UID   PID  PPID  C PRI  NI ADDR    SZ WCHAN  TTY          TIME CMD
0 S   500  2193  2192  0  75   0    -  1078 wait4  pts/2    00:00:00 bash
0 S   500  2320  2193  0  75   0    -   336 schedu pts/2    00:00:00 Prog01-Z
1 Z   500  2321  2320  0  75   0    -     0 t>     pts/2    00:00:00 Prog01-Z <defunct>
0 R   500  2322  2193  0  81   0    -   788 -      pts/2    00:00:00 ps
[divyen@localhost PP-TW1]$ Parent Process Running ...
I am In Zombie State ...

[divyen@localhost PP-TW1]$ ps -l
F S   UID   PID  PPID  C PRI  NI ADDR    SZ WCHAN  TTY          TIME CMD
0 S   500  2193  2192  0  76   0    -  1078 wait4  pts/2    00:00:00 bash
0 R   500  2320  2193 26  80   0    -   336 -      pts/2    00:00:04 Prog01-Z
1 Z   500  2321  2320  0  75   0    -     0 t>     pts/2    00:00:00 Prog01-Z <defunct>
0 R   500  2323  2193  5  81   0    -   787 -      pts/2    00:00:00 ps


*/