libft/ft__check_8h_source.html

#ifndef FT_CHECK_H

#define FT_CHECK_H


#include <stdbool.h>

#include <limits.h>


// ─────────────────────────────────────────────────────────────

// Character checks (drop-in replacements for <ctype.h>)

// ─────────────────────────────────────────────────────────────

int ft_isalnum(int c);

int ft_isalpha(int c);

int ft_isascii(int c);

int ft_isdigit(int c);

int ft_isprint(int c);

int ft_ispunct(int c);

int ft_isspace(int c);

int ft_islower(int c);

int ft_isupper(int c);

int ft_issign(int c);


// ─────────────────────────────────────────────────────────────

// String validation helpers

// ─────────────────────────────────────────────────────────────

bool ft_isstrpositive(

    const char* str);

bool ft_is_valid_integer(

    const char* str);


 // end of char_check group

#endif

ft_isupper
int ft_isupper(int c)
Uppercase letter.
Definition char_check.c:86

ft_islower
int ft_islower(int c)
Lowercase letter.
Definition char_check.c:74

ft_isdigit
int ft_isdigit(int c)
Decimal digit (0–9)
Definition char_check.c:38

ft_is_valid_integer
bool ft_is_valid_integer(const char *str)
Validates C-style signed integer string format.
Definition ft_is_valid_integer.c:75

ft_isstrpositive
bool ft_isstrpositive(const char *str)
Checks if string contains only digits and is > 0.
Definition char_check.c:152

ft_issign
int ft_issign(int c)
'+' or '-'
Definition char_check.c:137

ft_isspace
int ft_isspace(int c)
Whitespace (space, tab, newline, etc.)
Definition char_check.c:125

ft_isalnum
int ft_isalnum(int c)
Alphanumeric character.
Definition char_check.c:62

ft_isprint
int ft_isprint(int c)
Printable character (including space)
Definition char_check.c:98

ft_isascii
int ft_isascii(int c)
ASCII character (0–127)
Definition char_check.c:26

ft_isalpha
int ft_isalpha(int c)
Alphabetic character.
Definition char_check.c:50

ft_ispunct
int ft_ispunct(int c)
Printable non-alphanumeric (e.g., punctuation)
Definition char_check.c:110