#ifndef CTYPE_H
#define CTYPE_H

int isspace(int c);
int isascii(int c);
int toupper(int c);
int tolower(int c);
int isdigit(int c);
int isalpha(int c);
int isxdigit(int c);
int ispunct(int c);
int isalnum(int c);
int isprint(int c);
#endif