Complete the below function which dynamically allocates space to a 3d array of doubles, initializes all values to 0, and returns a pointer to the space.

1. double ***alloc3dArrayOfInts( int length, int width, int depth) {

2. double ***array3d = malloc(________ * sizeof(double **) );

3. for(int i=0; i< length ;i++) {

4. ________ = malloc(width * sizeof(double *) );

5. for(int j=0; j< ________;j++) {

6. __________ = malloc(depth * sizeof(double) );

7. }

8. }

9. return array3d;

10. }