Code Forums - View Single Post - creating 3-dimensional array

tvqpriqphh · 05-09-2006, 04:32 AM

nesvarbu:
it is true that a three dimensional array is a triple pointer

typeof(points) == GLfloat * * *

however, if you specify array offsets, those pointers get dereferenced

typeof(points[0]) == GLfloat * * (equivalent to *(points+0))

typeof(points[0][0]) == GLfloat * (equivalent to *(*(points+0)+0))

typeof(points[0][0][0]) == GLfloat (equivalent to *(*(*(points+0)+0)+0))

the compiler might be having trouble with the order of operations, perhaps you should try this syntax:

Code:

&(points[0][0][0])

now you dereference the triple pointer first and take the address of the result

typeof(&(points[0][0][0])) == GLfloat * (equivalent to &(*(*(*(point+0)+0)+0)))

05-09-2006, 04:32 AM	#3 (permalink)
tvqpriqphh Registered User Join Date: May 2006 Posts: 4	nesvarbu: it is true that a three dimensional array is a triple pointer typeof(points) == GLfloat * * * however, if you specify array offsets, those pointers get dereferenced typeof(points[0]) == GLfloat * * (equivalent to (points+0)) typeof(points[0][0]) == GLfloat (equivalent to ((points+0)+0)) typeof(points[0][0][0]) == GLfloat (equivalent to (((points+0)+0)+0)) the compiler might be having trouble with the order of operations, perhaps you should try this syntax: Code: &(points[0][0][0]) now you dereference the triple pointer first and take the address of the result typeof(&(points[0][0][0])) == GLfloat (equivalent to &(((*(point+0)+0)+0)))