array2d.h

来自「palm的pocketc」· C头文件 代码 · 共 36 行

/$ array2d
// array2d(int dim1, int dim2, char atype)
// create a two dimensional array (array[dim1][dim2])
// of type described by atype (i, p, c, s, f)
// See example at bottom

array2d(int dim1, int dim2, char atype) {
	pointer base_array, index_array;
	int i;

	base_array = malloct(dim1 * dim2, atype);
	if (!base_array)
		return 0;
	index_array = malloct(dim1, "p");
	if (!index_array) {
		free(base_array);
		return 0;
	}
	for (;i<dim1;i++)
		index_array[i] = &base_array[dim2 * i];
	return index_array;
}

/*
Example: create an 8x8 array of ints for a checker board

main() {
  pointer board;
  board = array2d(8, 8, 'i');
  
  // initialize the board
  board[0][0] = 1;
  board[1][3] = 2;
  ...
}
*/