> arena.c:55: warning: implicit declaration of function `atoi' This one is because you are not including a .h file you need. In this case, stdlib.h. If it's a C API function like this, you can read the man file to find out what .h file you need to include for it.
> arena.c:90: warning: implicit declaration of function `do_wartalk' > arena.c: In function `do_war': > arena.c:142: warning: implicit declaration of function `do_look' just put DECLARE_DO_FUN(do_look); at the top of the file for each do_ function you need to declare. Or include interp.h if you have a whole lot. --Palrich.
