-/* Is SUFFIX ending STRING? */
-int strsuffix (const char* string, const char* suffix);
-
-/* Return a newly allocated string composed of the concatenation of
- STRING1, and STRING2. */
-char* stringappend (const char* string1, const char* string2);
+FILE *xfopen (const char *name, const char *mode);
+void xfclose (FILE *ptr);