void    my_putchar(char c);
	  int     my_isneg(int n);
	  void    my_put_nbr(int nb);
	  void    my_swap(int *a, int *b);
	  void    my_putstr(char *str);
	  int     my_strlen(char *str);
	  int     my_getnbr(char *str);
	  char    *my_strcpy(char *dest, char *src);
	  char    *my_strncpy(char *dest, char *src, int n);
	  int     my_strcmp(char *s1, char *s2);
	  int     my_strncmp(char *s1, char *s2, int n);
	  char    *my_strcat(char *str1, char *str2);
	  char    *my_strncat(char *str1, char *str2, int n);
	  char    *my_strstr(char *str, char *to_find);
	  char    *my_strdup(char *str);
	  char    **my_str_to_wordtab(char *str);