Delphi中的进制转换
Delphi中的几种进制转换函数
非原创，收藏供查询。
二进制转换
function binToDec(Value: string): integer;
var
str: string;
i: integer;
begin
Str := UpperCase(Value);
result :=0;
for i :=1to Length(str) do
result := result *2+ ORD(str[i]) -48;
end;
functionmod_num(n1, n2: integer): integer; //取余数
begin
result := n1 - n1 div n2 * n2
end;
function reverse(s: string): string; //取反串
var
i, num: Integer;
st: string;
begin
num := Length(s);
st :='';
for i := num downto1do
begin
st := st + s[i];
end;
Result := st;
end;
function DecTobin(Value: Integer): string; //十进制转化二进制
var
ST: string;
N: Integer;
begin
ST :='';
n := value;
while n >=2do
begin
st := st + IntToStr(mod_num(n, 2));
n := n div2;
end;
st := st + IntToStr(n);
Result := reverse(st);
end;
16进制转字符
function HexToChar(Str: string): string;
var
i: integer;
buf1: array[0..100] of byte;
begin
for i :=0to (length(Str) div2-1) do
begin
buf1[i] := strtoint('$'+ copy(Str, i *2+1, 2));
Result := Result + char(buf1[i]);
end;
end;
function CharToHex(Str: string): string;
var
i: integer;
ch: char;
begin
for i :=1to (length(str)) do
begin
ch := Str[i];
Result := Result + inttohex(byte(ch), 2);
end;
end;
16进制转十进制
function hextoint(s: string): Integer;
begin//$代表16进制
Result:=StrToInt('$'+s);
end;
数据转换成二进制
function conertde(s:string):string;
var//数据都是以二进制的形式保存
i:integer;
begin
for i:=1to length(s) do
result:=result+inttohex(ord(s[i]),2);
end;
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