struct members

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struct members #224986 09/02/08 12:52 09/02/08 12:52
Joined: Aug 2008 Posts: 25 B bluemax OP Newbie
bluemax OP Newbie B Joined: Aug 2008 Posts: 25	I'm trying to get a struct member string value and compare it to another string: if(struct.member == "same_text") I have also tried strcpy() and strcmp() but LC will not compile due to pointer errors. any thought?

Re: struct members [Re: bluemax] #224990 09/02/08 13:14 09/02/08 13:14
Joined: Feb 2008 Posts: 3,232 Australia EvilSOB Expert
EvilSOB Expert Joined: Feb 2008 Posts: 3,232 Australia	check struct.member for being empty first Code: if(struct.member!=NULL) //make sure not un-initialised { // do other checks here if(str_cmp(struct.member,"same_text")==0) { // they are the same - so do something } } and first usage of struct member MUST be a Code: struct.member = str_create("something"); //is now now initialised I also assume you are using str_cpy() and str_cmp() and not strcpy() and strcmp() because they ARE different... "There is no fate but what WE make." - CEO Cyberdyne Systems Corp. A8.30.5 Commercial

Re: struct members [Re: EvilSOB] #225295 09/03/08 21:18 09/03/08 21:18
Joined: Oct 2004 Posts: 4,134 Netherlands Joozey Expert
Joozey Expert Joined: Oct 2004 Posts: 4,134 Netherlands	Quote: if(struct.member!=NULL) //make sure not un-initialised Even that wont work when the structure is uninitialised. Although it doesn't generate a crash, it is not functioning properly either. Uninitialised members are not NULL, they are literally nothing. Thus the statement will be true. struct.member=NULL; is required for the statement to be false. You always have to init every member at creation of the structure, that's the safest. Click and join the 3dgs irc community! Room: #3dgs

Re: struct members [Re: Joozey] #225329 09/04/08 02:35 09/04/08 02:35
Joined: Feb 2008 Posts: 3,232 Australia EvilSOB Expert
EvilSOB Expert Joined: Feb 2008 Posts: 3,232 Australia	Thanks Joozey, you are right of course. That is a hole I always fall into, call it a mental blank spot. "There is no fate but what WE make." - CEO Cyberdyne Systems Corp. A8.30.5 Commercial