home *** CD-ROM | disk | FTP | other *** search
- function Str2Int(Str:string): integer;
- var
- temp,code : integer;
- begin
- if length(Str) = 0 then
- Str2Int := 0
- else begin
- val(Str,temp,code);
- if code = 0 then
- Str2Int := temp
- else
- Str2Int := 0;
- end;
- end;
-
- function StripFrontChars(Var S : String;Ch : Char) : String;
- var
- S1 : String;
- begin
- While (S[1] = Ch) and (Length(S) > 0) do
- S := Copy(S,2,Length(S) - 1);
- StripFrontChars := S
- end;
-
- function StripBlanks(Var S : String) : String;
- var
- i : Integer;
- begin
- i := Length(S);
- while S[i] = ' ' do begin
- Delete(S,i,1);
- Dec(i);
- end;
- StripBlanks := S;
- end;
-
- function CleanString(var S: String): String;
- begin
- StripFrontChars(S, #32);
- StripBlanks(S);
- end;
-
- var
- S: String;
- i: Integer;
- begin
- S := ' 3 '; { Create a bad string that will cause errors }
- CleanString(S); { Clean it up }
- i := Str2Int(S); { Convert }
- WriteLn(i); { Show it to the screen }
- end.