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Elle définit un masque d’énumération. Chaque constante d’énumération caractérise une façon différente de classifier les caractères, comme défini par les fonctions avec des noms similaires déclarés dans l’en-tête <ctype.h>. Les constantes sont : space (fonction isspace) print (fonction isprint) cntrl (fonction iscntrl) upper (fonction isupper) lower (fonction islower) digit ...
C ctype Functions The <ctype.h> header provides many functions for classifying and modifying characters.
See Also ¶ ctype_cntrl () - Check for control character (s) ctype_graph () - Check for any printable character (s) except space ctype_punct () - Check for any printable character which is not whitespace or an alphanumeric character IntlChar::isspace () - Check if code point is a space character
Checks if the given character is either A standard white-space character: Space (0x20, ' '), Form feed (0x0c, '\f'), Line feed (0x0a, '\n'), Carriage return (0x0d, '\r'), Horizontal tab (0x09, '\t'), Vertical tab (0x0b, '\v'), Or a locale-specific white-space character. The behavior is undefined if the value of ch is not representable as unsigned char and is not equal to EOF.
Jul 12, 2025 · As string.h header file contains inbuilt functions to handle Strings in C/C++, the ctype.h / <cctype> contains inbuilt functions to handle characters in C/C++ respectively. Characters are of two types: Printable Characters: The characters that are displayed on the terminal. Control Characters: The characters that are initiated to perform a specific operation. The arguments passed to character ...
Include the standard header <ctype.h> to declare several functions that are useful for classifying and mapping codes from the target character set. Every function that has a parameter of type int can accept the value of the macro EOF or any value representable as type unsigned char. Thus, the argument can be the value returned by any of the functions fgetc, fputc, getc, getchar, putc, putchar ...
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Check if character is a white-space (function) isupper Check if character is uppercase letter (function) isxdigit Check if character is hexadecimal digit (function) Character conversion functions Two functions that convert between letter cases: tolower Convert uppercase letter to lowercase (function) toupper Convert lowercase letter to ...
