#ifndef __STRING_H
#define __STRING_H

extern void memset(char *ptr, char value, int len);
extern int strcmp(const char *s1, const char *s2);
extern char *strcpy(char *dest, char *src);
extern char *memcpy(char *dest, char *src, int len);
extern char toupper(char c);
extern char *strncpy(char *dest, char *src, int len);
extern int strlen (char *str);
extern char toupper(char c);
extern char *strcat(char *dest, char *src);
#endif