ObjectPascal Succ Function 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		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';   WriteLn('Character : '+Character);   Character := Succ(Character);   WriteLn('Character+1 : '+Character);   // We can increment numbers   Number := 23;   WriteLn('Number : '+IntToStr(Number));   Number := Succ(Number);   WriteLn('Number+1 : '+IntToStr(Number));   // We can increment enumerations   Card := Clubs;   WriteLn('Card starts at Clubs');   Card := Succ(Card);   if Card = Hearts then WriteLn('Card is now Hearts');   if Card = Clubs then WriteLn('Card is now Clubs');   if Card = Diamonds then WriteLn('Card is now Diamonds');   if Card = Spades then WriteLn('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