OSA B3

B3: C/C++ Program to Parent creating the child process by use of fork.

Program:

#include<stdio.h>

#include<unistd.h>

int main()

{

intpid;

pid=fork();

if(pid==0)

{

printf("\n After fork");

printf("\n The new child process created by fork system call %d\n", getpid());

printf("\n The parent process id is :- %d ", getppid());

}

else {

printf("\n Befor fork");

printf("\n The parent process id is :- %d ", getpid());

printf("\n parent excuted successfully\n");

            }

            return 0;

            }

Output:

[student@localhost ~]$ gccfork.c

[student@localhost ~]$ ./a.out

Befor fork

 The parent process id is :- 1792

parentexcuted successfully

 After fork

 The new child process created by fork system call 1793

 The parent process id is :- 1792 [student@localhost ~]$