access variable using pointer

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MrCredo

(Posted 2006) [#1]

SuperStrict

Local a:Int = 123
Local b:Int Ptr
Local c:Int Ptr Ptr

b=Varptr(a)
c=Varptr(b)

but how can i change the value 123, using c variable?
in C++ is could do this:
**c=777;

GfK	(Posted 2006) [#2]

This works. Don't know if there's a better way.

SuperStrict

Local a:Int = 123

Local bk:TBank = CreateStaticBank(Varptr(a),4)
PokeInt bk,0,125
DebugLog a

Floyd

(Posted 2006) [#3]

c[0][0] refers to a.

This array-style syntax for dereferencing pointers is a little awkward. I think it is meant to discourage the use of pointers, although they are available if you really want them.

MrCredo

(Posted 2006) [#4]

hm ;-)

i think we need a new keyword.

VARPTR "add" 1 pointer level to a variable/pointer
C++ do the same with &-symbol

VARSOMETHING (or a symbol *) should "remove" 1 pointer level from pointer
C++ do the same with *-symbol

int a;
int *b;
int **c;
b=&a;
c=&b;
b=*c;

or is c[0][0] official?