/in/foo.cc:43:30: error: no 'void SeqStack::Match(char*)' member function declared in class 'SeqStack'
 void SeqStack::Match(char s[])
                              ^
/in/foo.cc: In function 'int main()':
/in/foo.cc:76:4: error: 'class SeqStack' has no member named 'Match'
  a.Match(s);
    ^~~~~