#ifndef STRING_H #define STRING_H void memset(char *dest, unsigned char b, int n); void memcpy(char *dest, char *source, int n); int strlen(char *string); void strcat(char *dest, char *source); void strcpy(char *dest, char *source); int strcmp(char *a, char *b); int strncmp(char *a, char *b, int n); char *strdup(char *s); char *itoa(int i); char *itoa_base(unsigned int i, int base); #endif /* STRING_H */