Why child process returns exit status = 32512 in unix?

Question

In my program I\'m executing given command and getting result (log, and exit status). Also my program have to support shell specific commands (i.e. commands which contains shell

Answer 1

You should execute sh -c 'ls | wc'.

Option -c expects a command in form of string. In shell of course it is working, because there is no difference between spawning ls and redirecting output to wc and launching ls | wc in separate shell.