Pascal - Return Pointer from Subprograms


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A function can return a pointer as its result. The following program illustrates returning pointer from a function −

program exPointersFromFunctions;
type
   ptr = ^integer;

var
   i: integer;
   iptr: ptr;
function getValue(var num: integer): ptr;

begin
   getValue:= @num;
end;

begin
   i := 100;
   iptr := getValue(i);
   
   writeln('Value deferenced: ', iptr^);
end.

When the above code is compiled and executed, it produces the following result −

Value dereferenced: 100

pascal_pointers.htm

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