#include <cstdio> #include <cstdlib> #include <sys/types.h> #include <sys/wait.h> #include <unistd.h> int main() { pid_t pid; pid = fork(); if (pid< 0) { /* error occurred */ fprintf(stderr, "Fork Failed"); exit(-1); } else if (pid == 0) { /* child process */ execlp("/bin/ls", "ls", NULL); exit(0); } else { /* parent process */ /* parent will wait for the child to complete */ //wait(NULL); printf("Child Complete\n"); exit(0); } printf("hello from OS_0!\n"); return 0; }