Section 24.3 Initializing Multidimensional Arrays

It is possible to initialize a multidimensional array during declaration time. In fact, there are multiple ways to do so. The following four ways are actually all equivalent and all initialize a 2-dimensional array with the same values:

int matrix1[NROWS][NCOLS] = {{1,2}, {3,4}, {5,6}, {7,8} };
int matrix2[NROWS][NCOLS] = { {1,2},
                              {3,4},
                              {5,6},
                              {7,8}};
int matrix3[][NCOLS] = {{1,2}, {3,4}, {5,6}, {7,8} };
int matrix4[][NCOLS] = {1, 2, 3, 4, 5, 6, 7, 8};

The Codecast below illustrates this further:

If you cannot see this codecast, please click here.

Aside: Video Description.

Check Your Understanding Check Your Understanding

1.

Which of the following is correct?

int matrix[][2] = {5, 2, 7, 5, 3, 2, 8, 6};

Correct

int matrix[4][] = {5, 2, 7, 5, 3, 2, 8, 6};

Not quite. Try again!
```
int matrix = {5, 2, 7, 5, 3, 2, 8, 6};
```
Not quite. Try again!

int matrix[][] = {5, 2, 7, 5, 3, 2, 8, 6};

Not quite. Try again!

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