#ifndef __CTYPES_H
#define __CTYPES_H

int cgc_isalnum(int c);

int cgc_isalpha(int c);

int isascii(int c);

int isblank(int c);

int cgc_iscntrl(int c);

int cgc_isdigit(int c);

int cgc_isgraph(int c);

int cgc_islower(int c);

int cgc_isprint(int c);

int cgc_ispunct(int c);

int cgc_isspace(int c);

int cgc_isupper(int c);

int cgc_isxdigit(int c);

int cgc_toupper(int c);
int cgc_tolower(int c);

#endif