Result := True;
for i := 1 to Length(s) do
if not(s[i] in ['0'..'9']) then
begin
Result := False;
Break;
end;
for i := 1 to Length(s) do
if not(s[i] in ['0'..'9']) then
begin
Result := False;
Break;
end;
调试欢乐多
var
str:ansistring;
i:integer;
begin
for i:= 1 to length(str)
begin
if (ord(str[i]) <$30) or (ord(str[i]) >$39) then
就不全是数字拉
end;
end;
StrToInt(Str);
except
//不是;
end;