CSCI 3110

Preprocessor Macros Exercises

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1. Write an "include guard" for a data.h header file.
2. Replace each of the two const ints below with their own preprocessor directive.

   #include <iostream>
   using std::cout;
   using std::endl;
   
   const int NUM_ROWS = 512;
   const int NUM_COLS = 128;
   int fastArray[ NUM_ROWS * NUM_COLS]; // simulating a 2D array with a 1D array
   
   int main(){
       int counter = 0;
       for( int rowI = 0; rowI <= NUM_ROWS; rowI++){
           for( int colI = 0; colI <= NUM_COLS; colI++){
               ARRAY( rowI, colI) = counter++;
               cout << "(" << rowI << ", " << colI << "): " << ARRAY( rowI, colI) << endl;
           }
       }
       return 0;
   }
   

3. Storing a two dimensional array as a one dimensional array can speed up your code. Add a preprocessor macro ARRAY that takes two arguments, row and col and calculates the one dimensional array index as row + (col * NUM_ROWS).

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