C 庫函數– localeconv()
描述
C庫函數struct lconv *localeconv(void)設置或讀取地域化信息。 它會返回一個lconv結構類型的對象。
聲明
下面是localeconv() 函數的聲明。
struct lconv *localeconv(void)
參數
- NA
返回值
該函數返回一個指向當前區域struct lconv的指針，它的結構如下：
typedef struct {
char *decimal_point;
char *thousands_sep;
char *grouping;
char *int_curr_symbol;
char *currency_symbol;
char *mon_decimal_point;
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
實例
下面的實例演示了localeconv() 函數的用法。
#include <locale.h>
#include <stdio.h>
int main ()
{
struct lconv * lc;
setlocale(LC_MONETARY, "it_IT");
lc = localeconv();
printf("Local Currency Symbol: %s\n",lc->currency_symbol);
printf("International Currency Symbol: %s\n",lc->int_curr_symbol);
setlocale(LC_MONETARY, "en_US");
lc = localeconv();
printf("Local Currency Symbol: %s\n",lc->currency_symbol);
printf("International Currency Symbol: %s\n",lc->int_curr_symbol);
setlocale(LC_MONETARY, "en_GB");
lc = localeconv();
printf ("Local Currency Symbol: %s\n",lc->currency_symbol);
printf ("International Currency Symbol: %s\n",lc->int_curr_symbol);
printf("Decimal Point = %s\n", lc->decimal_point);
return 0;
}
讓我們編譯並運行上面的程序，這將產生以下結果：
Local Currency Symbol: EUR International Currency Symbol: EUR Local Currency Symbol: $ International Currency Symbol: USD Local Currency Symbol: £ International Currency Symbol: GBP Decimal Point = .