1 2 // book_merge.h 3 4 #ifndef BOOK_MERGE_H 5 #define BOOK_MERGE_H 6 7 // includes 8 9 #include "util.h" 10 11 // functions 12 13 extern void book_merge (int argc, char * argv[]); 14 15 #endif // !defined BOOK_MERGE_H 16 17 // end of book_merge.h 18 19