|
 Forum
Grundkurs
»Introduktion
»Snabbguide
»Komponenter
»Händelser
»Strängar
»Räkna med Delphi »Egna
typer
»Selektion
»Iteration
»Menyer
»Funktioner
»Arraystrukturer
Tips & Tricks
»Nya tips
»Blandat
»Databaser
»Filer
»Forms
»Grafik
»Internet
»Komponenter
»Matematik
»Multimedia
»Objekt/ActiveX
»Skrivare
»Strängar
»System
»Mest lästa tips
Artiklar
»Delphi och ADO
»Bygga en DLL
»Skapa en enkel rapport
»Hantera registret
»Enheter, units
»Klassen TCanvas
»Använd LookUp Controls
 Nya
tips
 Lägg
till tips
 Delphilänkar
 Gästbok
|
|
|
|
|
|
Formatera talsträngar
|
Kategori: Strangar
Inlagt: 2004-06-11
Läst: 1462
Inlagt av: Staffan Berg
|
|
Beskrivning |
|
Formatera tal genom att anropa dessa funktioner.
|
|
Kod |
Uses DOS, Crt;
VAR S : String;
function CommaString (number : longint) : string ;
var
TempStr : string ;
OrgLen : byte;
begin
Str (number, tempstr);
OrgLen := Length (tempstr);
if OrgLen > 3 then
begin
if OrgLen < 7 then
Insert (',', tempstr, Length (tempstr) - 2);
if OrgLen >= 7 then
begin
Insert (',', tempstr, length (tempstr) - 5);
Insert (',', tempstr, length (tempstr) - 2);
end;
end;
CommaString := tempstr;
end;
FUNCTION FmtStr (STR, Fmt : STRING) : STRING;
VAR
TempStr : STRING;
I, J : BYTE;
BEGIN
TempStr := '';
IF (POS (',', Fmt) > 0) THEN
BEGIN
FmtStr := STR;
IF LENGTH (STR) <= 3 THEN EXIT;
J := 0;
FOR I := LENGTH (STR) DOWNTO 1 DO
BEGIN
TempStr := STR [i] + TempStr;
INC (j);
IF (J MOD 3 = 0) AND (TempStr[1] <> '.') THEN TempStr := ',' + TempStr;
END;
WHILE TempStr [1] = ',' DO
TempStr := COPY (TempStr, 2, LENGTH (TempStr) );
END ELSE
BEGIN
J := 0;
FOR I := 1 TO LENGTH (Fmt) DO
BEGIN
IF NOT (Fmt [I] IN ['#', '!', '@', '*']) THEN
BEGIN
TempStr [I] := Fmt [I] ; //force any none format charcters into string
J := SUCC (J);
END
ELSE {format character}
BEGIN
IF I - J <= LENGTH (STR) THEN
TempStr [I] := STR [I - J]
ELSE
TempStr [I] := ' '; //pad with underlines
END;
END;
TempStr [0] := CHAR (LENGTH (Fmt) ); //set initial byte to string length
END;
FmtStr := Tempstr;
END; {Func FmtStr}
FUNCTION FmtReal(Num : REAL; FMT : STRING) : STRING;
VAR Tmp : STRING;
BEGIN
STR (Num : 12 : 2, Tmp);
WHILE (NOT (Tmp[1] in ['0'..'9','.'])) AND (Tmp > '') DO DELETE(Tmp,1,1);
FmtReal := FmtStr(Tmp, FMT);
END;
BEGIN
ClrScr;
WriteLn(CommaString(123456789)); //Format any type of INTEGER
WriteLn(FmtReal(1234567.89,'##,###,###,###.##')); //Format Type REAL with decimals
WriteLn(FmtStr('2198758811','(###) ###-####')); //Format a Phone number
WriteLn(FmtStr('062593','##/##/##')); //Format a date number
Readkey;
END
|
|
|