4 replies to this topic

[kruegs35]

I am having some trouble with arrays. I want to set a variable equal to a value in an array as it goes through a loop. The array and the variable are declared as integers. When I check the value of the variable while stepping through the code, the variable is listed as unaccessible. However, if I declare the variable as a string and do an IntToStr with the array value, I can get a value in the variable. Any reason for this? Is there a way to pull the values from an array as integers?

[ooisootuck]

Hi,

Can you please post your code?

Thanks

[WingedPanther]

Your variable will have to be of the same data type as the array's elements. Without seeing your code, it's hard to see what may be going on.

[kruegs35]

I do not have the actual code with me, but I will try to give the basics.

var

  i: integer;

  x: integer;

  MyArray: array[0..5] of integer;

begin

  for i = 0 to 5 do begin

    x := MyArray[i];

end; 

When I step through the code and follow the local variables, the value for x would say "unaccessible due to optimization". However, if I declare x as a string and type x:= IntToStr(MyArray[i]), I will get the value out of the array as a string.

[WingedPanther]

Try this:

var
  i: integer;
  x: integer;
  MyArray: array[0..5] of integer;
begin
  for i = 0 to 5 do begin
  begin
    x := MyArray[i];
    x := x;
  end;
end;

Delphi's debugger won't let you see an uninitialized variable, and since the for loop just kinda sits there, you never get a chance to see the value of x. You should be inspecting the value of x on the "x := x;" line.