function IsYourStr(const S:string):Boolean;
var
I:Integer;
begin
Result:=True;
for I := 1 to Length(S) do
if not (S[I] in ['0'..'9',',']) then
begin
Result:=False;
Break;
end;
end;
var
I:Integer;
begin
Result:=True;
for I := 1 to Length(S) do
if not (S[I] in ['0'..'9',',']) then
begin
Result:=False;
Break;
end;
end;
var I:integer;
T:boolean;
begin
T:=True;
result:=False;
for I:=1 to Length(S) do
begin
if not ((Ord(S[i])>=46) and (Ord(S[i])<=57) and (Ord(S[i])<>47)) then T:=False;
end;
result:=T;
end;