On Wed, 16 Nov 2022 at 11:15, Ted Yu <yuzhih...@gmail.com> wrote: > On Tue, Nov 15, 2022 at 7:12 PM Japin Li <japi...@hotmail.com> wrote: >> After some rethinking, I find the origin code do not have problems. >> >> If fd is NULL or fgets() returns NULL, the process exits. Otherwise, we >> call >> pclose() to close fd. The code isn't straightforward, however, it is >> correct. >> >> >> >> Please read this sentence from my first post: > > If the fgets() call doesn't return NULL, the pclose() would be skipped.
fgets() returns non-NULL, it means the second condition is false, and it will check the third condition, which calls pclose(), so it cannot be skipped, right? -- Regrads, Japin Li. ChengDu WenWu Information Technology Co.,Ltd.
