Write a program in C language and run it in Linux environment that displays the

Question

Write a program in C language and run it in Linux environment that displays the following results:

1. Display the Process ID of the Parent processes

2. Then execute a fork() call

3. If call is successful on fork( ) execution then display the process identifierof the Child process which returned to the Parent process Or Display theProcess ID of Child process

4. Show that Process ID of the Parent process does not change before andafter fork() call.

5. Child process display a message “I AM CHILD PROCESS”

6. Parent process display a message “I AM PARENT PROCESS”

Explanation / Answer

#include #include #include #include int main(void) { pid_t pid; if ((pid = fork()) < 0) { perror("fork error"); exit(1); } if (pid == 0) { /* * Now we are in the childs thread * let us issue a chdir syscall :) */printf(" IAM CHILD PROCESS"); } else { printf("I AM PARENT PROCESS child process id is %d:",pid); } return(0); }

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