A PROGRAM SHOWING CREATION OF NEW PROCESS IN SAME PROCESS...

/MY PROGRAM ARE COMPILED IN FEDORA15 ..WITH 4.6 gcc compiler...../

/*A program to check the function of fork in same parent process again & again*/

#include<stdio.h>

#include<stdlib.h>

#include<string.h>

#include<fcntl.h>

#include<unistd.h>

int main()

{

int ret;

printf("!!!!!\n");

ret=fork();

if(ret==0)

{

printf("in child1 ..pita=%d self=%d\n",getppid(),getpid());//pita=3307 self=3308

}

else

{

printf("in parent...else1....pid=%d\n",getpid());//pid=3307

ret=fork();

if(ret==0)

{

printf("in child2..pita=%d self=%d\n",getppid(),getpid());//pita=3307 self=3309

}

else

{

printf("in parent...else1....pid=%d\n",getpid());//pid=3307

ret=fork();

if(ret==0)

{

printf("in child2..pita=%d self=%d\n",getppid(),getpid());//pita=3307 self=3309

}

else

{

printf("in parent...else2....pid=%d\n",getpid());//pid=3307

ret=fork();

if(ret==0)

{

printf("in child3..pita=%d self=%d\n",getppid(),getpid());//pita=3307 self=3310

}

else

{

printf("in parent...else1....pid=%d\n",getpid());//pid=3307

ret=fork();

if(ret==0)

{

printf("in child2..pita=%d self=%d\n",getppid(),getpid());//pita=3307 self=3309

}

else

{

printf("in parent...else2....pid=%d\n",getpid());//pid=3307

ret=fork();

if(ret==0)

{

printf("in child3..pita=%d self=%d\n",getppid(),getpid());//pita=3307 self=3310

}

else

{

printf("in parent...else3....pid=%d\n",getpid());//pid=3307

}

}//all brackets of parent of all fork should be closed at the end of main.......so that same parent will remain alive......& all child of this parent work seprately...if u close any of else bracket before..here....after that those set of statements will be executed by parent & also child of that parent.....which was foked.........

}

return 0;

}