很简单
procedure TForm1.Button1Click(Sender: TObject);
var istr,str:string;
i:integer;
begin
istr:='f45中%过人$`国``3.,';
str:='';
for i:=1 to length(istr) do
begin
if istr[i]>chr(127) then
str:=str+istr[i];
end;
showmessage(str);
end;
procedure TForm1.Button1Click(Sender: TObject);
var istr,str:string;
i:integer;
begin
istr:='f45中%过人$`国``3.,';
str:='';
for i:=1 to length(istr) do
begin
if istr[i]>chr(127) then
str:=str+istr[i];
end;
showmessage(str);
end;
procedure TForm1.Button1Click(Sender: TObject);
var istr,str:string;
i:integer;
ST:TSTRINGLIST;
begin
try
ST:=TSTRINGLIST.Create;
ST.LoadFromFile('h:\aaa.TXT');
ISTR:=ST.TEXT;
str:='';
for i:=1 to length(istr) do
begin
if istr[i]>chr(127) then
str:=str+istr[i];
end;
showmessage(str);
finally
st.free;
end;
end;
procedure TForm1.Button1Click(Sender: Tobject);
var s:string;
I,e,c:integer;
begin
s:=memo1.text;
e:=0;c:=0;
for I:=1 to length(s) do
begin
if (ord(s[I])>=33)and(ord(s[I])<=126) then
begin
inc(e);
label1.caption:='英文字数:'+inttostr(e);
end
else
if (ord(s[I])>=127) then
begin
inc(c);
label2.caption:='中文字数:'+inttostr(c div 2);
end;
end;
end;