#include <iostream>
using namespace std;


// Note how 3 is hardcoded into 2nd dimension and in code for looping (AWKWARD!)
int sumMatrixEntries(int matrix[][3], int firstDimensionSize)
{
     int sum = 0;
     int indexOne;
     int indexTwo;

     for (indexOne = 0; indexOne < firstDimensionSize; indexOne = indexOne + 1)
     {
          for (indexTwo = 0; indexTwo < 3; indexTwo = indexTwo + 1)
          {
               sum = sum + matrix[indexOne][indexTwo];
          }
     }

     return sum;
}


int main(int argc, char* argv[])
{
     int myMatrix[3][3];
     int indexOne;
     int indexTwo;


     // fill the array with the values 0 through 8 
     // [0 1 2]
     // [3 4 5]
     // [6 7 8]
     for (indexOne = 0; indexOne < 3; indexOne = indexOne + 1)
     {
          for (indexTwo = 0; indexTwo < 3; indexTwo = indexTwo + 1)
          {
               myMatrix[indexOne][indexTwo] = indexOne * 3 + indexTwo;
          }
     }

     cout << "Sum of entries in matrix: " << sumMatrixEntries(myMatrix,3) << endl;    

     return 0;
}