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From: toma@killer.UUCP (Tom Armistead)
Newsgroups: comp.lang.c
Subject: Re: 'incompatble types error'- help needed
Message-ID: <1076@killer.UUCP>
Date: Tue, 30-Jun-87 22:13:13 EDT
Article-I.D.: killer.1076
Posted: Tue Jun 30 22:13:13 1987
Date-Received: Sat, 4-Jul-87 19:47:14 EDT
References: <1524@batcomputer.tn.cornell.edu>
Organization: The Org. for the Disorg. of Org.
Lines: 25
Summary: Use the Type Cast operator

In article <1524@batcomputer.tn.cornell.edu>, hurf@batcomputer.tn.cornell.edu (Hurf Sheldon) writes:
>  /* text removed . . . */
> 
>   the problem (from tn3270's telnet.c)
> 		sin.sin_addr.s_addr = inet_addr(argv[1])
> causes the error " operands of = have incompatible types"
> where argv is declared char *argv[], 'sin.sin_addr.s_addr' is
> u_long (from include/netinet/in.h ) and inet_addr() is declared
> 'external unsigned long inet_addr();' in telnet.c
> 
> Is there a way to get this past the compiler - I have tried a couple of
> (probably simplistic) redefines and they have made thing worse.

I don't what the type 'u_long' is, but if is a true type, like 'char' or
'int', ect..., then a type cast oper. should do it for you, like this:

        sin.sin_addr.s_addr = (u_long)inet_addr(argv[1]);
                              ^^^^^^^^
                                 |__this is the 'Type Cast'

Tom
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Tom Armistead