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This example is for Wiring version 0024+. If you have a previous version, use the examples included with your software. If you see any errors or have comments, please let us know.

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() {

    }