例如
11011010110001111100010001110100
如果是无符号转换,就是3670525044
如果是带符号转换,就是-624442252请问如何将3670525044 转换为 -624442252
或是将-624442252 转换为 3670525044多谢!
11011010110001111100010001110100
如果是无符号转换,就是3670525044
如果是带符号转换,就是-624442252请问如何将3670525044 转换为 -624442252
或是将-624442252 转换为 3670525044多谢!
I: Integer;
begin
I := 3670525044;
end;或是将-624442252 转换为 3670525044procedure TForm1.Button1Click(Sender: TObject);
var
I: Int64;
begin
I := LongWord(-624442252);
ShowMessage(IntToStr(I));
end;
http://kingron.myetang.com/zsfunc01.htm
(*//
标题:无限进制转换
说明:使用于数学领域进制之间相互转换
设计:Zswang
日期:2002-01-24
支持:[email protected]
//*)
///////Begin Source
const
cScaleChar = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ';
function IntPower(Base, Exponent: Integer): Integer; { 返回Base的Exponent次方 }
var
I: Integer;
begin
Result := 1;
for I := 1 to Exponent do
Result := Result * Base;
end; { IntPower }
function IntToDigit(mNumber: Integer; mScale: Byte;
mLength: Integer = 0): string;
{ 返回整数的进制表示;mScale指定多少进制;mLength指定长度,长度不足时向前补0 }
var
I, J: Integer;
begin
Result := '';
I := mNumber;
while (I >= mScale) and (mScale > 1) do begin
J := I mod mScale;
I := I div mScale;
Result := cScaleChar[J + 1] + Result;
end;
Result := cScaleChar[I + 1] + Result;
for I := 1 to mLength - Length(Result) do Result := '0' + Result;
end; { IntToDigit }
function DigitToInt(mDigit: string; mScale: Byte): Integer;
{ 返回进制表示转换成整数;mScale指定多少进制 }
var
I: Byte;
L: Integer;
begin
Result := 0;
mDigit := UpperCase(mDigit);
L := Length(mDigit);
for I := 1 to L do
Result := Result + (Pos(mDigit[L - I + 1], cScaleChar) - 1) *
IntPower(mScale, I - 1);
end; { DigitToInt }
///////End Source
///////Begin Demo
procedure TForm1.Button1Click(Sender: TObject);
begin
Edit1.Text := IntToDigit(StrToIntDef(Edit2.Text, 0), 16);
end;
procedure TForm1.Button2Click(Sender: TObject);
begin
Edit2.Text := IntToStr(DigitToInt(Edit1.Text, 16));
end;
///////End Demo
var
I : Longint;
W : Longword;
begin
W := 3670525044;
I := W;
ShowMessage(IntToStr(I) + ' , ' + IntToStr(W)); I := -624442252;
W := I;
ShowMessage(IntToStr(I) + ' , ' + IntToStr(W));
end;