ctype.h
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#ifndef _CTYPE_H
#define _CTYPE_H
#include <types.h>
#include <stdbool.h>
bool isalpha(char c);
bool isupper(char c);
bool islower(char c);
bool isdigit(char c);
bool isspace(char c);
char toupper(char c);
char tolower(char c);
#endif /* _CTYPE_H */
c
char c
Definition: string.h:20
isalpha
bool isalpha(char c)
isdigit
bool isdigit(char c)
islower
bool islower(char c)
isspace
bool isspace(char c)
isupper
bool isupper(char c)
tolower
char tolower(char c)
toupper
char toupper(char c)
stdbool.h
types.h