<locale.h> - C語言標準庫

locale.h頭文件定義了特定的位置設置，如日期格式和貨幣符號。有一個重要的結構struct lconv和兩個重要的函數，下面列出一些宏定義。

庫宏

以下是在標頭中定義的宏，這些宏將被用在下面列出的兩個函數：

S.N.

宏及說明

LC_ALL
Set everything.

LC_COLLATE
Affects strcoll and strxfrm functions.

LC_CTYPE
Affects all character functions.

LC_MONETARY
Affects the monetary information provided by localeconv function.

LC_NUMERIC
Affects decimal-yiibai formatting and the information provided by localeconv function.

LC_TIME
Affects the strftime function.

庫函數

以下是頭locale.h中定義的函數：

S.N.

功能及說明

char *setlocale(int category, const char *locale)
設置或讀取位置相關的信息。

struct lconv *localeconv(void)
設置或讀取位置相關的信息。

庫結構

typedef struct { char *decimal_yiibai; char *thousands_sep; char *grouping; char *int_curr_symbol; char *currency_symbol; char *mon_decimal_yiibai; char *mon_thousands_sep; char *mon_grouping; char *positive_sign; char *negative_sign; char int_frac_digits; char frac_digits; char p_cs_precedes; char p_sep_by_space; char n_cs_precedes; char n_sep_by_space; char p_sign_posn; char n_sign_posn; } lconv

以下是每個字段的描述：

S.N.

字段＆說明

decimal_yiibai
Decimal yiibai character used for non-monetary values.

thousands_sep
Thousands place separator character used for non-monetary values..

grouping
A string that indicates the size of each group of digits in non-monetary quantities. Each character represents an integer value which designates the number of digits in the current group. A value of 0 means that the previous value is to be used for the rest of the groups.

int_curr_symbol
A string of the international currency symbols used. The first three characters are those specified by ISO 4217:1987 and the fourth is the character which separates the currency symbol from the monetary quantity.

currency_symbol
The local symbol used for currency.

mon_decimal_yiibai
The decimal yiibai character used for monetary values.

mon_thousands_sep
The thousands place grouping character used for monetary values.

mon_grouping
A string whose elements define the size of the grouping of digits in monetary values. Each character represents an integer value which designates the number of digits in the current group. A value of 0 means that the previous value is to be used for the rest of the groups.

positive_sign
The character used for positive monetary values.

negative_sign
The character used for negative monetary values.

int_frac_digits
Number of digits to show after the decimal yiibai in international monetary values.

frac_digits
Number of digits to show after the decimal yiibai in monetary values.

p_cs_precedes
If equal to 1, then the currency_symbol appears before a positive monetary value. If equal to 0, then the currency_symbol appears after a positive monetary value.

p_sep_by_space
If equal to 1, then the currency_symbol is separated by a space from a positive monetary value. If equal to 0, then there is no space between the currency_symbol and a positive monetary value.

n_cs_precedes
If equal to 1, then the currency_symbol precedes a negative monetary value. If equal to 0, then the currency_symbol succeeds a negative monetary value.

n_sep_by_space
If equal to 1, then the currency_symbol is separated by a space from a negative monetary value. If equal to 0, then there is no space between the currency_symbol and a negative monetary value.

p_sign_posn
Represents the position of the positive_sign in a positive monetary value.

n_sign_posn
Represents the position of the negative_sign in a negative monetary value.

使用以下值爲p_sign_posn和n_sign_posn：

值

描述

括號封裝值和CURRENCY_SYMBOL的。the currency_symbol.

符號之前的值和currency_symbol.

該標誌成功的值和currency_symbol.

符號立即之前的值和 currency_symbol.

符號立即成功的值和currency_symbol.