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Member "FreeBASIC-1.09.0-win64/examples/manual/operator/address-var.bas" (1 Jan 2022, 1041 Bytes) of package /windows/misc/FreeBASIC-1.09.0-win64.zip:
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1 '' examples/manual/operator/address-var.bas
2 ''
3 '' NOTICE: This file is part of the FreeBASIC Compiler package and can't
4 '' be included in other distributions without authorization.
5 ''
6 '' See Also: https://www.freebasic.net/wiki/wikka.php?wakka=KeyPgOpAt
7 '' --------
8
9 'This program demonstrates the use of the @ operator.
10
11 Dim a As Integer
12 Dim b As Integer
13
14 Dim addr As Integer Ptr
15
16 a = 5 'Here we place the values 5 and 10 into a and b, respectively.
17 b = 10
18
19 'Here, we print the value of the variables, then where in memory they are stored.
20 Print "The value in A is ";a;" but the pointer to a is ";@a
21 Print "The value in B is ";b;" but the pointer to b is ";@b
22
23 'Now, we will take the integer ptr above, and use @ to place a value into it.
24 'Note that the * will check the value in the ptr, just as @ checked the ptr
25 'for a normal variable.
26
27 addr = @a
28
29 Print "The pointer addr is now pointing at the memory address to a, value: ";*addr
30
31 addr = @b
32
33 Print "The pointer addr is now pointing at the memory address to b, value: ";*addr