locale

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1. Set the Locale for the Current Thread

#include <locale.h>
int setlocale(int category, const char *locale);

Sets the locale for the specified category for the current thread.

2. Get the Current Locale

#include <locale.h>
char *setlocale(int category, const char *locale);

Returns the current locale for the specified category.

3. Convert a String to Uppercase

#include <locale.h>
char *strupr(char *s);

Converts the string s to uppercase.

4. Convert a String to Lowercase

#include <locale.h>
char *strlwr(char *s);

Converts the string s to lowercase.

5. Compare Two Strings Case-Insensitively

#include <locale.h>
int strcasecmp(const char *s1, const char *s2);

Compares the two strings s1 and s2 case-insensitively.

6. Copy a String

#include <locale.h>
char *strcpy(char *dest, const char *src);

Copies the string src to the string dest.

7. Concatenate Two Strings

#include <locale.h>
char *strcat(char *dest, const char *src);

Concatenates the string src to the end of the string dest.

8. Get the Length of a String

#include <locale.h>
size_t strlen(const char *s);

Returns the length of the string s.

9. Find a Character in a String

#include <locale.h>
char *strchr(const char *s, int c);

Returns a pointer to the first occurrence of the character c in the string s.

10. Find the Last Occurrence of a Character in a String

#include <locale.h>
char *strrchr(const char *s, int c);

Returns a pointer to the last occurrence of the character c in the string s.

11. Split a String into Tokens

#include <locale.h>
char *strtok(char *str, const char *delim);

Splits the string str into tokens based on the delimiter delim.

12. Convert a Number to a String

#include <locale.h>
char *itoa(int num, char *str, int radix);

Converts the integer num to a string str in the specified radix radix.

13. Convert a String to a Number

#include <locale.h>
long int atol(const char *str);

Converts the string str to a long integer.

14. Format a Number

#include <locale.h>
char *strftime(char *str, size_t maxsize, const char *format,
               const struct tm *tm);

Formats the time specified by the tm structure according to the format string format.

15. Get the Current Time

#include <locale.h>
time_t time(time_t *tloc);

Returns the current time as a time_t value.

16. Convert a Time_t Value to a String

#include <locale.h>
char *ctime(const time_t *tloc);

Converts the time_t value tloc to a string.

17. Convert a String to a Time_t Value

#include <locale.h>
time_t mktime(struct tm *tm);

Converts the tm structure to a time_t value.

18. Get the Current Date and Time

#include <locale.h>
struct tm *localtime(const time_t *tloc);

Gets the current date and time as a tm structure.

19. Set the Current Date and Time

#include <locale.h>
struct tm *gmtime(const time_t *tloc);

Sets the current date and time from the time_t value tloc.

20. Get the Julian Day Number

#include <locale.h>
int julian_day(const struct tm *tloc);

Calculates the Julian day number for the given tm structure.

21. Get the Day of the Year

#include <locale.h>
int day_of_year(const struct tm *tloc);

Returns the day of the year for the given tm structure.

22. Get the Day of the Week

#include <locale.h>
int weekday(const struct tm *tloc);

Returns the day of the week for the given tm structure.

23. Get the Week of the Year

#include <locale.h>
int week_of_year(const struct tm *tloc);

Returns the week of the year for the given tm structure.

24. Convert a Time Zone String to a Time Zone Structure

#include <locale.h>
struct tm *timezone(const char *tloc);

Converts the time zone string tloc to a tm structure.

25. Convert a Time Zone Structure to a Time Zone String

#include <locale.h>
char *tzname[2];

Converts the tm structure to a time zone string.

26. Get the Time Zone Offset

#include <locale.h>
int timezone;

Returns the time zone offset in seconds from UTC.

27. Get the Daylight Savings Time Offset

#include <locale.h>
int daylight;

Returns the daylight savings time offset in seconds from UTC.

28. Get the Current Character Set

#include <locale.h>
char *setlocale(int category, const char *locale);

Sets the current character set to the locale locale.

29. Get the Current Collation Order

#include <locale.h>
char *setlocale(int category, const char *locale);

Sets the current collation order to the locale locale.

30. Get the Current Monetary Format

#include <locale.h>
char *setlocale(int category, const char *locale);

Sets the current monetary format to the locale locale.

31. Get the Current Numeric Format

#include <locale.h>
char *setlocale(int category, const char *locale);

Sets the current numeric format to the locale locale.

32. Get the Current Time Format

#include <locale.h>
char *setlocale(int category, const char *locale);

Sets the current time format to the locale locale.

33. Get the Current Date Format

#include <locale.h>
char *setlocale(int category, const char *locale);

Sets the current date format to the locale locale.

34. Get the Current Measurement System

#include <locale.h>
char *setlocale(int category, const char *locale);

Sets the current measurement system to the locale locale.

35. Get the Current Paper Size

#include <locale.h>
char *setlocale(int category, const char *locale);

Sets the current paper size to the locale locale.

36. Get the Current Language

#include <locale.h>
char *setlocale(int category, const char *locale);

Sets the current language to the locale locale.

37. Get the Current Country

#include <locale.h>
char *setlocale(int category, const char *locale);

Sets the current country to the locale locale.

38. Get the Current Locale Name

#include <locale.h>
char *setlocale(int category, const char *locale);

Returns the name of the current locale.

39. Create a New Locale

#include <locale.h>
locale_t newlocale(int locale_mask, const char *locale, locale_t base);

Creates a new locale with the specified locale mask, locale, and base locale.

40. Destroy a Locale

#include <locale.h>
int freelocale(locale_t locale);

Destroys the specified locale.

41. Duplicate a Locale

#include <locale.h>
locale_t duplocale(locale_t locale);

Duplicates the specified locale.

42. Get the Locale Categories

#include <locale.h>
int locale_catmasks(int locale_mask, locale_t locale);

Returns the locale categories that are set in the specified locale mask.

43. Mask a Locale Category

#include <locale.h>
int locale_set_categorymask(int locale_mask, int category);

Sets the locale category mask to the specified value.

44. Unmask a Locale Category

#include <locale.h>
int locale_unset_categorymask(int locale_mask, int category);

Unsets the locale category mask for the specified category.

45. Get the Locale Attributes

#include <locale.h>
int locale_get_attributes(locale_t locale);

Returns the locale attributes for the specified locale.

46. Set the Locale Attributes

#include <locale.h>
int locale_set_attributes(locale_t locale, int attributes);

Sets the locale attributes for the specified locale.

47. Compare Two Locales

#include <locale.h>
int locale_compare(locale_t locale1, locale_t locale2);

Compares two locales and returns 0 if they are equal.

48. Merge Two Locales

#include <locale.h>
locale_t locale_merge(locale_t locale1, locale_t locale2);

Merges two locales into a new locale.

49. Get the Locale Environment

#include <locale.h>
char *setlocale(int category, const char *locale);

Gets the locale environment for the specified category.

50. Set the Locale Environment

#include <locale.h>
char *setlocale(int category, const char *locale);

Sets the locale environment for the specified category.