Write an application under linux, named an_ch2 1b. The program continuously outputs the following lines: Those output come from child, [system time] Write another application named an_ch2_1a. This program creates a subprocess to execute an_ch2_1b. The program continuously outputs the following lines: Those output come from child, [system time] Observe the results of the program and explain the phenomena you see.

Filename	Size	Update
an_ch2_1a.cpp	258	2019-04-06
an_ch2_1b.cpp	447	2019-04-06
Consoleapp.c	472	2019-04-06

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