一段代码,请问是什么意思?
{--------------------------------------------------------------}
program Cradle;
{--------------------------------------------------------------}
{ Constant Declarations }
const TAB = ^I; //什么意思?
{--------------------------------------------------------------}
{ Variable Declarations }
var Look: char; { Lookahead Character }
{--------------------------------------------------------------}
{ Read New Character From Input Stream }
procedure GetChar;
begin
Read(Look);
end;
{--------------------------------------------------------------}
{ Report an Error }
procedure Error(s: string);
begin
WriteLn;
WriteLn(^G, 'Error: ', s, '.');//什么意思?
end;
{--------------------------------------------------------------}