Code cleanup and stylization

inc/graph.hpp

@@ -1,34 +1,41 @@
 
-#ifndef PROJECT2_GRAPH_HPP_INCLUDED
-#define PROJECT2_GRAPH_HPP_INCLUDED
+#ifndef PROJECT2_INC_GRAPH_HPP
+#define PROJECT2_INC_GRAPH_HPP
 
 #include <string> // string
 #include <vector> // vector<int>, vector<vector<int>
 
+typedef std::vector<std::vector<int>> matrix;
+
 class graph {
-public:
+  public:
    // Constructors
-   graph() {}
+   graph () {}
    // Initializers:
    //   Read a graph from a file
-   int read(std::string filename);
+   int read (std::string filename);
+   //   Error codes given off by read ()
+   enum ERROR { INVALID_PROCESSES = 0b000001,
+                INVALID_RESOURCES = 0b000010,
+                INVALID_COUNTS    = 0b000100,
+                INVALID_ROWS      = 0b001000,
+                INVALID_COLUMNS   = 0b010000,
+                INVALID_FILENAME  = 0b100000 };
 
    // check functions:
    //   is the graph...
-   bool reducible();// ?
-   bool knotted();// ?
+   bool reducible (); // ?
+   bool knotted ();   // ?
 
    // miscellaneous functions:
    //   print the graph
    void print ();
 
-   typedef std::vector<std::vector<int>> matrix;
-
-private:
+  private:
    int num_processes = 0;
    int num_resources = 0;
    std::vector<int> resource_counts;
    matrix m; // Tell me, Mr. Anderson, what good is a phone call if you are unable to speak?
 };
 
-#endif
+#endif // PROJECT2_INC_GRAPH_HPP

inc/read.hpp

@@ -0,0 +1,28 @@
+#ifndef PROJECT2_INC_READ_HPP
+#define PROJECT2_INC_READ_HPP
+
+#include <string>
+#include <vector>
+
+/* stovi:
+*     convert string s to vector<int> no matter the cost
+
+   @param &s   const reference to a string
+
+   @returns vector<int>: signed integer representations
+            of the groups of contiguous digits in the string
+*/
+std::vector<int> stovi (const std::string &s);
+
+/* print_errpr_message:
+*     Print the error message associated with the given error number
+
+   @param error      int representing the error states of graph::read()
+   @param filename   string containing the name of a file
+
+   @returns void
+
+*/
+void print_error_message (int error, std::string filename);
+
+#endif // PROJECT2_INC_READ_HPP