Refactor for robustness and clarity

inc/graph.hpp

@@ -11,9 +11,8 @@ public:
    graph() {}
    // Initializers:
    //   Read a graph from a file
-   void read(std::string filename);
-   //   TODO: generate a random graph
-   void random(int processes, int resources);
+   int read(std::string filename);
+
    // check functions:
    //   is the graph...
    bool reducible();// ?
@@ -23,17 +22,13 @@ public:
    //   print the graph
    void print ();
 
-   struct m{
-      int x, y;
-      std::vector<std::vector<int>> data;
-   };
+   typedef std::vector<std::vector<int>> matrix;
 
 private:
    int num_processes = 0;
    int num_resources = 0;
    std::vector<int> resource_counts;
-   struct m matrix; // Tell me, Mr. Anderson, what good is a phone call if you are unable to speak?
-   bool is_blocked(int process_id);
+   matrix m; // Tell me, Mr. Anderson, what good is a phone call if you are unable to speak?
 };
 
 #endif