DelphiBasics
 SuccFunction Increment an ordinal variable System unit
 function Succ ( const Ordinal Value ) : Ordinal type;
Description
The Succ function increments an ordinal value, and returns this value.

You can increment :

 Characters Non-floating number types Enumeration types Pointers

The increment is by the base size of the unit. For example, incrementing a Pointer will be by 4 bytes if the pointer points to Words.

Notes
Succ is equivalent in performance to simple addition, or the Inc procedure.
Related commands
 Dec Decrement an ordinal variable Inc Increment an ordinal variable Pred Decrement an ordinal variable Sqr Gives the square of a number Sqrt Gives the square root of a number Sum Return the sum of an array of floating point values
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 Example code : Incrementing characters, numbers and enumerations type   TSuit = (Hearts, Clubs, Diamonds, Spades); var   Character : char;   Number    : Integer;   Card      : TSuit; begin  // We can increment characters   Character := 'A';   ShowMessage('Character : '+Character);   Character := Succ(Character);   ShowMessage('Character+1 : '+Character);   // We can increment numbers   Number := 23;   ShowMessage('Number : '+IntToStr(Number));   Number := Succ(Number);   ShowMessage('Number+1 : '+IntToStr(Number));   // We can increment enumerations   Card := Clubs;   ShowMessage('Card starts at Clubs');   Card := Succ(Card);   if Card = Hearts then ShowMessage('Card is now Hearts');   if Card = Clubs then ShowMessage('Card is now Clubs');   if Card = Diamonds then ShowMessage('Card is now Diamonds');   if Card = Spades then ShowMessage('Card is now Spades'); end; Show full unit code Character : A   Character+1 : B   Number : 23   Number+1 : 24   Card starts at Clubs   Card is now Diamonds
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