gcc error ullwas not declared in this scope Washburn Wisconsin

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gcc error ullwas not declared in this scope Washburn, Wisconsin

The NULL pointer is a special value of a pointer that effectively indicates "this pointer points at nothing". I'm moving next weekend, & I hear that you're known as 'the guy with a truck'. Your (faulty) code has compiled with earlier GCC versions, but it would be difficult to stay backward compatible with earlier GCC versions, in addition to earlier C++ standard versions. –Seppo Enarvi That's lame.

And how do you expect to efficiently represent nullptr as anything other than 0? -- I mean the best with what I say. It's an identifier defined in some standard headers. Thread Tools Display Modes Mar 22nd, 2006, 1:29 PM #1 titaniumdecoy Programming Guru Join Date: Nov 2005 Location: California Posts: 1,535 Rep Power: 13 'NULL' was not declared Can Communism become a stable economic strategy?

For example, void fn (void) { int foo; foo = bar (); /* foo is never used. */ } Gives the following diagnostic: warning: variable "foo" set but not used [-Wunused-but-set-variable] Vanneto Member #8,643 May 2007 Posted on 06/21/2008 6:00 AM Just use 0. My Website! | EAGLE GUI Library Demos | My Deviant Art Gallery | Spiraloid Preview | A4 FontMaker | Skyline! (Missile Defense)Bear in mind you do not have permission from King It must be constructed (in this case in the Packet class constructor).

Also, Which compiler do you use? Was This Post Helpful? 0 Back to top MultiQuote Quote + Reply #7 poncho4all D.I.C Head! I am using Code::Blocks to compile this code c++ syntax nodes share|improve this question edited May 29 '09 at 6:35 unwind 254k38332460 asked May 29 '09 at 6:30 TheTeh add a Now it doesn't make any sense at all. :-/ bamccaig Member #7,536 July 2006 Posted on 06/21/2008 5:27 PM BAF said: So C++0x isn't going to make null actually null (instead

How should I interpret "English is poor" review when I used a language check service before submission? Even compiling my code with -std=c++98 GCC stills don't recognize NULL macro, and It only recognize nullptr with either c++11 or gnu++11 as argument for -std. –pharaoh Nov 17 '12 at Please be careful with the answers you give novices. Where were you trying to use NULL that caused this.

How? Thomas Fjellstrom Member #476 June 2000 Posted on 06/21/2008 1:16 AM Well, that and 0 is what you're SUPPOSED to use -- Thomas Fjellstrom - [website] - [email] - [Allegro Wiki] There is a difference: semantics. BAF.zone | SantaHack!

For example: void f(int); void f(void*); f(0); // Ambiguous. Reference 0 error: “null” was not declared in this scope 0 C++ use struct defined in another caused endless loop Related 1796What are the differences between a pointer variable and a Nothing has succeeded. Putting pin(s) back into chain Why can't we use the toilet when the train isn't moving?

C++ language issues Header dependency changes Many of the standard C++ library include files have been edited to no longer include to get namespace std -scoped versions of size_t and Your (faulty) code has compiled with earlier GCC versions, but it would be difficult to stay backward compatible with earlier GCC versions, in addition to earlier C++ standard versions. –Seppo Enarvi In C++ it is supported in which might mean (i.e. share|improve this answer answered Jan 20 '09 at 17:14 Johannes Schaub - litb 341k766701045 God, I am so spoiled with Java (null being a keyword) that I never thought

You haven't #included an appropriate header file, so g++ sees NULL as a regular variable name, and you haven't declared it. Filter columns basing on the value of other column How to limit a xorg installation to a single video driver? Is it plausible for my creature to have similar IQ as humans? up vote 49 down vote favorite 7 I have a problem with this struct contructor when I try to compile this code: typedef struct Node { Node( int data ) //

You could even use: Packet(int i = 0, string data = "") : index(i), content(data) { } to have a single constructor with defaulted arguments. Browse other questions tagged c++ gcc pointers null or ask your own question. Similar topics Value of int NULL Re: friend declared function call Null Argument shouldnt be? share|improve this answer answered Nov 30 '11 at 14:16 Seppo Enarvi 1,03711316 1 But still It is a strange behavior!

FAQ #null My Website! | EAGLE GUI Library Demos | My Deviant Art Gallery | Spiraloid Preview | A4 FontMaker | Skyline! (Missile Defense)Bear in mind you do not have permission Not the answer you're looking for? Does a survey require an ethical approval? I am just trying to use it.

Last edited on Jul 23, 2015 at 5:14pm UTC Jul 23, 2015 at 5:15pm UTC bobpit (16) Yanson You mean replace NULL with nullptr? Then, "nullptr" will be a keyword. James Stanley Member #7,275 May 2006 Posted on 06/20/2008 3:25 PM You sure you haven't got those the wrong way round?In my experience, C++ complains about not casting, while C doesn't So C++0x isn't going to make null actually null (instead of 0 or some other crap)?

Is the NHS wrong about passwords? After reading this thread: http://www.cplusplus.com/forum/beginner/150487/ I just converted null to NULL uppercase. So 0 it is. \o/ In capitalist America bank robs you. It's not guaranteed, but you are very likely to get its definition included if you include many of the other standard headers instead.

Why was the identity of the Half-Blood Prince important to the story? How does gcc "taking steps towards C++11" affect this? I haven't checked the standard, so take this with a grain of salt) it is a constant in namespace std rather than a macro. Can cats leave scratch marks on cars?

share|improve this answer edited Aug 27 '13 at 8:52 answered May 29 '09 at 6:38 paxdiablo 490k1179721421 28 I tend think that NULL is useful documentation that you are intending I am providing my code below to assist with the troubleshooting process: #include using namespace std; class Packet { int index; string content; public: Packet() { index = null; content Related 1134Why does ++[[]][+[]]+[+[]] return the string “10”?1594Why is one loop so much slower than two loops?15908Why is it faster to process a sorted array than an unsorted array?0C++ custom template Why is absolute zero unattainable?

NULL: tempNode->getPayload(); } #ifndef LIST_H #define LIST_H #include "node1.h" template class MyList{ private: Node* head; public: MyList(); ~MyList(void); void add(T* item); void remove(T* item); void remove(int index=0); void remove(Node* node); And it's wierd 'cause it compiles this code just fine: MODEL* VGFX::create_model() { if(this->iNumberOfModels < 100) { this->Models[this->iNumberOfModels] = new MODEL; return this->Models[this->iNumberOfModels++]; } return NULL; } To me, the the Search: Advanced Forum Search Forums Programming Web Development Computers Tutorials Snippets Dev Blogs Jobs Lounge Login Join! NULL is defined in stdlib.h/cstdlib #include or #include // This is preferrable for c++ share|improve this answer answered May 29 '09 at 6:34 Andy White 48.2k40142186 NULL