/in/foo.cc: In function 'int StringPatternMatch(std::__cxx11::string&, std::__cxx11::string&)':
/in/foo.cc:21:6: warning: unused variable 'i' [-Wunused-variable]
  int i, j;
      ^
/in/foo.cc:21:9: warning: unused variable 'j' [-Wunused-variable]
  int i, j;
         ^
/in/foo.cc:22:6: warning: unused variable 'nIndexTag' [-Wunused-variable]
  int nIndexTag;
      ^~~~~~~~~
/in/foo.cc: In function 'int main(int, char**)':
/in/foo.cc:53:2: warning: 'char* gets(char*)' is deprecated [-Wdeprecated-declarations]
  gets(ary_cParent);
  ^~~~
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:53:18: warning: 'char* gets(char*)' is deprecated [-Wdeprecated-declarations]
  gets(ary_cParent);
                  ^
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:54:2: warning: 'char* gets(char*)' is deprecated [-Wdeprecated-declarations]
  gets(ary_cSub);
  ^~~~
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:54:15: warning: 'char* gets(char*)' is deprecated [-Wdeprecated-declarations]
  gets(ary_cSub);
               ^
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:50:6: warning: unused variable 'nSubLength' [-Wunused-variable]
  int nSubLength = 0, nCount = 0, nPosition = 0;
      ^~~~~~~~~~
/in/foo.cc:50:34: warning: unused variable 'nPosition' [-Wunused-variable]
  int nSubLength = 0, nCount = 0, nPosition = 0;
                                  ^~~~~~~~~
/tmp/ccVXbZVO.o: In function `main':
foo.cc:(.text.startup+0x1f): warning: the `gets' function is dangerous and should not be used.