#!/usr/local/bin/cz -- use b Main() # also testing post-pre cstr x = strdup("hello world") post(_p1_) Free(x) pre(_p1_) Sayf("%s", x) post(_p2_) Say("world") pre(_p2_) Say("hello") int fd = Open("/etc/passwd", O_RDONLY) post(_1_) Close(fd) nl() Say("file closed") pre(_1_) char b[1025] ssize_t count = Read(fd, b, 1024) b[count] = '\0' Say(b)