#include #include "ourhdr.h" static void charatatime(char *); int main(void) { pid_t pid; if ( (pid = fork()) < 0) err_sys("fork error"); else if (pid == 0) { charatatime("output from child\n"); } else { charatatime("output from parent\n"); } exit(0); } static void charatatime(char *str) { char *ptr; int c; setbuf(stdout, NULL); /* set unbuffered */ for (ptr = str; c = *ptr++; ) putc(c, stdout); }