From Clomosy Docs
procedure Inc(var X: Integer); overload;
The Inc procedure increments the ordinal variable parameter passed to it.
Example
var
Number : Integer;
{
Number = 23;
ShowMessage('Number : '+IntToStr(Number));
Inc(Number);
ShowMessage('Number+1 : '+IntToStr(Number));
}
Output:
Number : 23
Number+1 : 24