/* $begin fork */ #include "csapp.h" int main() { pid_t pid; int x = 1; pid = Fork(); //line:ecf:forkreturn if (pid == 0) { /* Child */ printf("child : x=%d\n", ++x); //line:ecf:childprint exit(0); } /* Parent */ printf("parent: x=%d\n", --x); //line:ecf:parentprint exit(0); } /* $end fork */