#include <stdio.h>
#include <stdlib.h>

char *xfgets(char *, size_t, FILE *);
FILE *xfopen(const char *, const char *);
int xfputs(const char *, FILE *);
void *xmalloc(size_t);
void *xrealloc(void *, size_t);
size_t my_strlcpy(char *, const char *, size_t);