MESSAGE
| DATE | 2002-04-24 |
| FROM | Jonathan Bober
|
| SUBJECT | Re: [hangout] C problem
|
From owner-hangout-desteny-at-mrbrklyn.com Wed Apr 24 01:08:18 2002
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Date: Wed, 24 Apr 2002 00:00:16 -0500
From: Jonathan Bober
To: Ruben I Safir
Cc: hangout-at-nylxs.com
Subject: Re: [hangout] C problem
Message-Id: <20020424000016.101a03b4.jwb235-at-nyu.edu>
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First, what is g_hash_table_new(), if those warnings are important to
you?
Second, hTable must be declared to be something before a value is
assigned to it. If it is indeed declared above main(), (which I guess
it would be, based on the error) it must be of the same type that
g_hash_table_new returns.
In other words, if g_hash_table_new looks like "g_hash_table*
g_hash_table_new(g_hash_function*, g_hash_compare_function*)" (just
guesses,) then hTable must be of type g_hash_table* and HashFunction and
HashCompare must be the proper types of functions. The lvalue error
sounds like it might be something like g_hash_table_new returns a
g_hash_table* and hTable is a g_hash_table (not a pointer.)
In general, if a function is declared as:
type function();
Then before writing the statement:
x = function();
You must write the statement:
type x;
On Wed, 24 Apr 2002 00:07:55 -0400
Ruben I Safir wrote:
>
> int main(int argc, char *argv[]){
> int ret = 0;
> hTable = g_hash_table_new(HashFunction, HashCompare);
> while(1){
> if(! ret=scanf("%255s", buff_key)) break; <====LINE 35
> if(!scanf("%255s", buff_val)) break;
> g_print("%s %s %d \n", buff_key, buff_val, ret);
>
> g_hash_table_insert(hTable, buff_key, buff_val);
> }
>
>
>
> hash.c: In function `main':
> hash.c:33: warning: passing arg 1 of `g_hash_table_new' from
> incompatible pointer type hash.c:33: warning: passing arg 2 of
> `g_hash_table_new' from incompatible pointer type hash.c:35: invalid
> lvalue in assignment
>
> --
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