两字节16进制转十进制实例dlphi、c++

delphi ----------------------------------------

var

  ii: SmallInt ;

begin

  ss[1] := Char($FF);
  ss[2] := Char($CA);

  ii := word(ss[1]) *256+ word(ss[2]);

 edt1.Text := FormatFloat('0.00', ii/10.0);

end

 

c++---------------------------------------------

{
  unsigned char ReceiveBuf[500];
  ReceiveBuf[1] = 0xFF;
  ReceiveBuf[2] = 0xCA;
  short int x;
  x=(unsigned int)ReceiveBuf[1]*256+ReceiveBuf[2];
  Edit1->Text = FormatFloat("0.0000",x/10.0);
}

 

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结果为：-5.4