// An example of dynamic multi-dimensional arrays in C.
//
// cc -o multidim multidim.c
// or
// cc -o multidim multidim.c -D Linux

#if !defined(Linux)
  #include <windows.h>           //Not Linux must be windows
#endif
#include <stdio.h>

int main( int argc, char** argv )
{
	int** twodArray;
	int d1,d2;
	int x,y;

	printf("Dimension one: ");
	scanf("%d",&d1);
	printf("Dimension two: ");
	scanf("%d",&d2);

	// An array of pointers-to-int (also known as int**)
	// size is d1
	// 
	twodArray=(int**)malloc(d1*sizeof(int*));

	// Now, each element in the previous array is treated as a
	// pointer-to-int, also known as an array of int
	// 
	for (x=0; x<d1; x++)
		twodArray[x]=(int*)malloc(d2*sizeof(int));

	printf("\n\n%dx%d array....\n\n",d1,d2);

	for (x=0; x<d1; x++)
		for (y=0; y<d2; y++)
			twodArray[x][y]=(x*d2)+y;
	
	for (x=0; x<d1; x++)
	{
		for (y=0; y<d2; y++)
			printf("%3d ",twodArray[x][y]);
		printf("\n");
	}
			
	// Free memory...
	for (x=0; x<d1; x++)
		free(twodArray[x]); // free the columns
        free(twodArray); // free the row pointers

	return 0;
}