/**
 * Array 2D. 
 * 
 * Demonstrates the syntax for creating a two-dimensional (2D) array.
 * Values in a 2D array are accessed through two index values.  
 * 2D arrays are useful for storing bitmaps. In this example, each position 
 * is holding a number multiple of 5. 
 */
 
int numbers[5][5] = { {5, 10, 15, 20, 25}, // declares an 2D array of 5x5 positions
                      {30, 35, 40, 45, 50},  // with initial values
                      {55, 60, 65, 70, 75},
                      {80, 85, 90, 95, 100},
                      {105, 110, 115, 120, 125}
                    };

void setup() {
  Serial.begin(9600);
  
  for(int i=0; i<5; i++) {  // print the 2D array using i and j as indexes
    for(int j=0; j<5; j++) {
      Serial.print(numbers[i][j]);
      Serial.print(" ");
    }
    Serial.println();
  }
}

void loop() {
  
}
