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Mid2 ex3

Description

Refer to exam paper.

Format

Please name the file as ex3.c and compress it in a zip/tar file (Do not include ex3.h in zip/tar, and the contents in ex3.h should not be changed).

Note

In ex3.c, please make sure that you write #include "ex3.h" before writing the codes, and do not define the struct in ex3.c (you can assume it is already defined.)