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# Format Function

Converts a numeric expression to a string, and then formats it according to the format that you specify.

### Syntax:

    Format(expression [, format As String]) As String

### Parameters:

expression: Numeric expression that you want to convert to a formatted string.

format: String that specifies the format code for the number. If format is omitted, the Format function works like the LibreOffice Basic Str() function.

### Return value:

Text string.

## 格式化代碼

The following list describes the codes that you can use for formatting a numeric expression:

0: If expression has a digit at the position of the 0 in the format code, the digit is displayed, otherwise a zero is displayed.

If expression has fewer digits than the number of zeros in the format code, (on either side of the decimal), leading or trailing zeros are displayed. If the expression has more digits to the left of the decimal separator than the amount of zeros in the format code, the additional digits are displayed without formatting.

Decimal places in the expression are rounded according to the number of zeros that appear after the decimal separator in the format code.

#: If expression contains a digit at the position of the # placeholder in the format code, the digit is displayed, otherwise nothing is displayed at this position.

This symbol works like the 0, except that leading or trailing zeroes are not displayed if there are more # characters in the format code than digits in the expression. Only the relevant digits of the expression are displayed.

.：小數萬用字元用於確定小數分隔符左邊和右邊的位數。

If the format code contains only # placeholders to the left of this symbol, numbers less than 1 begin with a decimal separator. To always display a leading zero with fractional numbers, use 0 as a placeholder for the first digit to the left of the decimal separator.

%: Multiplies the expressionby 100 and inserts the percent sign (%) where the expression appears in the format code.

E- E+ e- e+ : If the format code contains at least one digit placeholder (0 or #) to the right of the symbol E-, E+, e-, or e+, the expression is formatted in the scientific or exponential format. The letter E or e is inserted between the number and the exponent. The number of placeholders for digits to the right of the symbol determines the number of digits in the exponent.

如果指數為負數，則在包含 E-、E+、e-、e+ 的指數前顯示減號。如果指數為正數，則僅在包含 E+ 或 e+ 的指數前顯示加號。

The thousands delimiter is displayed if the format code contains the delimiter enclosed by digit placeholders (0 or #).

句點是用作千位分隔符還是用作小數分隔符，取決於地區設定，而作為小數分隔符顯示的實際字元取決於系統設定中的數字格式。此處的示例假定地區設定為「US」。

- + $ ( ) space: A plus (+), minus (-), dollar ($), space, or brackets entered directly in the format code is displayed as a literal character.

若要顯示除上述之外的其他字元，必須在該字元前加反斜線 (\)，或在字元前後加引號 (" ")。

\ : The backslash displays the next character in the format code.

Characters in the format code that have a special meaning can only be displayed as literal characters if they are preceded by a backslash. The backslash itself is not displayed, unless you enter a double backslash (\\) in the format code.

在格式代碼中，為了顯示為文字字元而必須在前面加反斜線的字元包括日期、時間等格式化字元 (a、c、d、h、m、n、p、q、s、t、w、y、/、:)、數字格式化字元 (#、0、%、E、e、逗號、句點) 和字串格式化字元 (@、&、<、>、!)。

You can also use the following predefined number formats. Except for "General Number", all of the predefined format codes return the number as a decimal number with two decimal places.

如果您使用預先定義的格式，格式名稱的前後必須加上引號。

## 預先定義的格式

General Number：顯示格式與輸入格式相同的數字。

Currency：在數字前插入美元符號並在負數前後加上括號。

Fixed：至少顯示小數分隔符前一位數位。

Standard：顯示數字時帶有千位分隔符。

Percent：將數字乘以 100，並附加百分號。

Scientific：以科學記數法格式顯示數字 (例如，1000 顯示為 1.00E+03)。

A format code can be divided into three sections that are separated by semicolons. The first part defines the format for positive values, the second part for negative values, and the third part for zero. If you only specify one format code, it applies to all numbers.

您可以設定用於 [LibreOffice] - [喜好設定][工具] - [選項] - [語言設定] - [語言] 的 LibreOffice Basic 中，控制格式化數字、日期及貨幣的語言環境。在 Basic 格式碼中，小數點 (.) 經常用作為定義在您語言環境中之小數點符號的「佔位項」，並將會由對應的字元所取代。

這同樣適用於日期、時間和貨幣等格式的語言環境設定。Basic 格式代碼將依語言環境設定進行解譯和顯示。

### 錯誤代碼：

5 無效的程序呼叫

### Example:

    Sub ExampleFormat
        MsgBox Format(6328.2, "##,##0.00")
        當您以 Basic 原始程式碼輸入數字時，REM 一律使用句點當作小數點定義符號。
        REM 例如，在英語語言環境中顯示為 6,328.20，在德語語言環境中顯示為 6.328,20
    End Sub

相關主題

Number format codes

String functions