C++ Program Error (Graph Problem):

I am getting an error claiming that a vector I need to use for my program is out of scope.

Here is the error message:

The verticies vector is declaired as a private method (I assume the error has something to do with this).

Here is my code for the assignDistricts() method and verticies vector:

Does anyone know what the problem is?

Graph.cpp: In function void assignDistricts()': Graph.cpp:99:22: error. vertices, was not declared in this scope for(int = 0 ;