A) What is it doing?b) Identify all the system callsc) Indicate what output it will produce to the consoled) For each system call, say what it does and how it changes the state of the process if at all. void main(){pid_t pid, mypid;pid = fork();if (pid<0) {printf("Error, fork failed\n");exit(0);}else if (pid==0) {mypid = getpid();printf("Child process pid is %d\n",mypid);sleep(10);exit(0);} else {mypid=getpid();wait(NULL);printf(" Parent process pid is %d\n",mypid);}}