/in/foo.cc: In function 'void GetStatResult(char*, std::set<StatUnit>&)':
/in/foo.cc:83:6: warning: unused variable 'nSubStringLen' [-Wunused-variable]
  int nSubStringLen = 0, nIndex = 0, nTag = 0;
      ^~~~~~~~~~~~~
/in/foo.cc: In function 'int main(int, char**)':
/in/foo.cc:183:2: warning: 'char* gets(char*)' is deprecated [-Wdeprecated-declarations]
  gets(strTest);
  ^~~~
In file included from /usr/include/c++/6/cstdio:42:0,
                 from /usr/include/c++/6/ext/string_conversions.h:43,
                 from /usr/include/c++/6/bits/basic_string.h:5417,
                 from /usr/include/c++/6/string:52,
                 from /usr/include/c++/6/bits/locale_classes.h:40,
                 from /usr/include/c++/6/bits/ios_base.h:41,
                 from /usr/include/c++/6/ios:42,
                 from /usr/include/c++/6/ostream:38,
                 from /usr/include/c++/6/iostream:39,
                 from /in/foo.cc:2:
/usr/include/stdio.h:640:14: note: declared here
 extern char *gets (char *__s) __wur __attribute_deprecated__;
              ^~~~
/in/foo.cc:183:14: warning: 'char* gets(char*)' is deprecated [-Wdeprecated-declarations]
  gets(strTest);
              ^
In file included from /usr/include/c++/6/cstdio:42:0,
                 from /usr/include/c++/6/ext/string_conversions.h:43,
                 from /usr/include/c++/6/bits/basic_string.h:5417,
                 from /usr/include/c++/6/string:52,
                 from /usr/include/c++/6/bits/locale_classes.h:40,
                 from /usr/include/c++/6/bits/ios_base.h:41,
                 from /usr/include/c++/6/ios:42,
                 from /usr/include/c++/6/ostream:38,
                 from /usr/include/c++/6/iostream:39,
                 from /in/foo.cc:2:
/usr/include/stdio.h:640:14: note: declared here
 extern char *gets (char *__s) __wur __attribute_deprecated__;
              ^~~~
/tmp/ccDTyCBs.o: In function `main':
foo.cc:(.text.startup+0x17): warning: the `gets' function is dangerous and should not be used.