/in/foo.cc:7:17: error: 'b' does not name a type
  int a[100]={0};b[100]={0};
                 ^
/in/foo.cc: In member function 'void Seqlist::input()':
/in/foo.cc:15:14: error: 'i' was not declared in this scope
  for(int j=0;i<m;j++)
              ^
/in/foo.cc:20:9: error: 'b' was not declared in this scope
    cin>>b[i];
         ^
/in/foo.cc:22:22: error: qualified-id in declaration before '(' token
  void Seqlist::search()
                      ^
/in/foo.cc:42:2: error: expected '}' at end of input
  }
  ^