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葡萄京娛樂場手機APP:WinAPI 字符及字符串函數(3) CharUpper字符或字符串轉大寫

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unit U葡萄京娛樂場手機APPnit1;

interface

uses

Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,

Dialogs, StdCtrls;

type

TForm1 = class(TForm)

Button1: TButton;

Button2: TButton;

Button3: TButton;

Button4: TButton;

Button5: TButton;

procedure Button1Click(Sender: TObject);

procedure Button2Click(Sender: TObject);

procedure Button3Click(Sender: TObject);

procedure Button4Click(Sender: TObject);

procedure Button5Click(Sender: TObject);

end;

var

Form1: TForm1;

implementation

{$R *.dfm}

{對字符}

proced葡萄京娛樂場手機APPure TForm1.Button1Click(Sender: TObject);

var

C: Char;

begin

C := 'a';

C := Char(CharUpper(PChar(C)));

ShowMessage(C); {A}

end;

{對字符常量}

procedure TForm1.Button2Click(Sender: TObject);葡萄京娛樂場手機APP

var

C: Char;

begin

C := Char(CharUpper(PChar('a')));

ShowMessage(C); {A}

end;

{對字符數組}

procedure TForm1.Button3Click(Sender: TObject);

var

Arr: array[0..2+1] of Char;

begin

Arr := 'abc';

Char葡萄京娛樂場手機APPUpper(Arr);

ShowMessage(Arr); {ABC}

end;

{對字符串}procedure TForm1.Button4Click(Sender: TObject);

var

str: string;

begin

str := 'abc葡萄京娛樂場手機APP';

CharUpper(@str[1]);

ShowMessage(str); {ABC}

end;

{Delphi 的 System.UpCase 和 SysUtils.LowerCase}

procedure TForm1.Button5Click(Sender: TObject);

var

c: Char;

str: string;

begin

c := 'a';

c := UpCase(c);

str := 'abc';

str := UpperCase(str);

ShowMessageFmt('%s, %s', [c, str]); {A, ABC}

end;

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