Scroll Down to See All▾

abort abs acos asctime asctime_r asin assert atan atan2 atexit atof atoi atol bsearch btowc calloc catclose catgets catopen ceil clearerr clock cos cosh ctime ctime_r difftime div erf erfc exit exp fabs fclose fdopen feof ferror fflush fgetc fgetpos fgets fgetwc fgetws fopen fprintf fputc fputws fread free freopen frexp fscanf fseek fsetpos ftell fwide fwprintf fwrite fwscanf getc getchar getenv getwc getwchar gmtime gmtime_r hypot isalnum isalpha isascii isblank iscntrl isdigit isgraph islower isprint ispunct isspace isupper iswalnum iswalpha iswblank iswcntrl iswctype iswdigit iswgraph iswlower iswprint iswpunct iswspace iswxdigit isxdigit j0 j1 jn labs ldexp ldiv localeconv localtime localtime_r log log10 longjmp malloc mblen mbrlen mbrtowc mbsinit mbsrtowcs mbstowcs mbtowc memchr memcmp memcpy memmove memset mktime modf nextafter nextafterl nexttoward nexttowardl nl_langinfo perror pow printf putc putchar putenv puts putwc putwchar qsort quantexpd32 quantexpd64 quantexpd128 quantized32 quantized64 quantized128 samequantumd32 raise rand rand_r realloc regcomp regerror regexec regfree remove rename rewind scanf setbuf setjmp setlocale setvbuf signal sin sinh snprintf sprintf sqrt srand sscanf strcasecmp strcat strchr strcmp strcoll strcpy strcspn strerror strfmon strftime strlen strncasecmp strncat strncmp strncpy strpbrk strptime strrchr strspn strstr strtod strtod32 strtod64 strtod128 strtof strtok strtok_r strtol strtold strtoul strxfrm swprintf swscanf system tan tanh time time64 tmpfile tmpnam toascii tolower toupper towctrans towlower towupper ungetc ungetwc va_arg va_copy va_end va_start vfprintf vfscanf vfwprintf vfwscanf vprintf vscanf vsprintf vsnprintf vsscanf vswprintf vswscanf vwprintf vwscanf wcrtomb wcscat wcschr wcscmp wcscoll wcscpy wcscpy wcsftime wcslen wcsncat wcsncmp wcsncpy wcspbrk wcsptime wcsrchr wcsrtombs wcsspn wcsstr wcstod wcstod32 wcstod64 wcstod128 wcstof wcstok wcstol wcstold wcstombs wcstoul wcsxfrm wctob wctomb wctrans wctype wcwidth wmemchr wmemcmp wmemcpy wmemmove wmemset wprintf wscanf y0 y1 yn

Function Details : iswupper

intiswupper(wint_t wc) ;

Return Type : int

Integer type (typically 4 bytes, -2,147,483,648 to 2,147,483,647)

Read about return values of iswupper function .

1st Parameter Type : wint_t

An integer type capable of storing any wide character value or the special value WEOF, used in wide-character input/output functions.

1st Parameter

The wide character to be tested, passed as a `wint_t`

Read more about parameters of iswupper in parameters section

The iswupperfunction in C language Checks whether the wide character is uppercase.

The iswupper function tests whether wc is a wide character code representing an uppercase letter. The exact set of characters for which iswupper returns true is locale-dependent.

The iswupperfunction takes 1 parameter:

•
wint_t `wc`: The wide character to be tested, passed as a `wint_t`

Checks if the given wide character `wc` is an uppercase letter in the current locale. Returns a nonzero value if `wc` is an uppercase letter, and `0` otherwise.

The iswupper function return value :

Returns non-zero if the wide character is an uppercase letter, 0 otherwise

Output

This example demonstrates basic usage of iswupper with various wide characters, including non-ASCII letters.