//取得字符串中指定的字符 procedure TForm1.Button1Click(Sender: TObject);var mystr:string;begin mystr:='Delphi7'; showmessage(mystr[3]);end;
本文共 198 字,大约阅读时间需要 1 分钟。
//取得字符串中指定的字符 procedure TForm1.Button1Click(Sender: TObject);var mystr:string;begin mystr:='Delphi7'; showmessage(mystr[3]);end;
转载于:https://www.cnblogs.com/xe2011/archive/2012/05/31/2527408.html