Error Cannot Call Member Function Virtual Void Without Object
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Cannot Call Member Function Without Object C++
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Cannot Call Member Function Without Object Inheritance
helping each other. Join them; it only takes a minute: Sign up cannot call member function without object up vote 15 down vote favorite This program has the user input name/age pairs and then outputs them, using a class. Here is the code. #include "std_lib_facilities.h" class Name_pairs { public: bool test(); void read_names(); void read_ages(); void print(); cannot call member function without object singleton private: vector
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of cannot declare member function static this site About Us Learn more about Stack Overflow the company Business c++ invalid use of member in static member function Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask this is unavailable for static member functions Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up http://stackoverflow.com/questions/1127738/cannot-call-member-function-without-object Error c++ cannot call member function without object [duplicate] up vote -2 down vote favorite This question already has an answer here: cannot call member function without object 3 answers Any one know how to solve this error? I'm not too sure where it went wrong. MissionPlan.cpp: In function ‘int computeCivIndex(PointTwoD*, int)’: MissionPlan.cpp:132: error: cannot call member function ‘float LocationData::computeCivIndex(std::string, int, int, float, http://stackoverflow.com/questions/19344634/error-c-cannot-call-member-function-without-object float)’ without object Source code: int computeCivIndex(PointTwoD list[], int entry) { int record = 0; for (int z = 0; z < entry; z ++) { LocationData d=list[z].getLocationData(); float civIndex = LocationData::computeCivIndex(d.getSunType(), d.getNoOfEarthLikePlanets(), d.getNoOfEarthLikeMoons(), d.getAveParticulateDensity(), d.getAvePlasmaDensity()); if(civIndex != list[z].getCivIndex()) { record++; } list[z].setCivIndex(civIndex); } return record; } c++ share|improve this question edited Oct 13 '13 at 13:23 harpun 3,32212132 asked Oct 13 '13 at 11:24 XGAl 28117 marked as duplicate by juanchopanza, Maciej Piechotka, Kate Gregory, deepmax, Kuba Ober Oct 14 '13 at 12:50 This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question. 2 Make LocationData::computeCivIndex static if it can be, or call it through an object if it can't. –StoryTeller Oct 13 '13 at 11:26 Make your mehtod Static –MohammadRB Oct 13 '13 at 11:26 As the error says, you need an object instance. What is your intent? What did you mean to do? –Casper Beyer Oct 13 '13 at 11:32 add a comment| 2 Answers 2 active oldest votes up vote 1 down vo
Pages) 1 2 → New Topic/Question Reply 20 Replies - 12816 Views - Last Post: 04 October 2010 - 02:47 PM Rate Topic: #1 Jacic D.I.C Head Reputation: 2 Posts: 54 Joined: 15-June 10 http://www.dreamincode.net/forums/topic/191524-cannot-call-member-function-without-object/ Cannot call member function without object Posted 22 September 2010 - 12:10 PM Im following the tutorials over at www.sdltutorials.com and I got to the events section(http://www.sdltutorials.com/sdl-events/). My code is the same as on the site, but I get this error: cannot call member function `virtual void Event::onEvent(SDL_Event*)' without object The file this error occurs in: #include "main.h" void Test::onEvent(SDL_Event* event) { Event::onEvent(event); } void Test::onExit() { running member function = false; } Im using Dev-C++. Thanks in advance. Is This A Good Question/Topic? 0 Back to top MultiQuote Quote + Reply Replies To: Cannot call member function without object #2 taylorc8 B& Reputation: 150 Posts: 1,572 Joined: 21-July 09 Re: Cannot call member function without object Posted 22 September 2010 - 12:28 PM Dev-C++ is a terrible IDE/compiler--it is broken half of the time. When I cannot call member used it, I noticed "good" C++ didn't work with it. If you're having trouble, and you don't think it's your code's fault, it just may be Dev-C++. In fact I'm inclined to think it is. Was This Post Helpful? 0 Back to top MultiQuote Quote + Reply #3 Oler1s D.I.C Lover Reputation: 1396 Posts: 3,884 Joined: 04-June 09 Re: Cannot call member function without object Posted 22 September 2010 - 12:40 PM It's not Dev-C++ fault. it's your code. Even without seeing the rest of your code, like the class Event, I can see you made a crucial mistake. Look at the information available. From your code: Event::onEvent(event); Event::onEvent is valid syntax when Event is a class and onEvent is a static member function. If onEvent isn't static, then Event::onEvent doesn't make sense. Where's the object, right? Quotecannot call member function `virtual void Event::onEvent(SDL_Event*)' without object That's your error message. So this function isn't static. It's not static because it's virtual. A virtual function means that the actual function called is resolved based on the object at runtime. A static member function involves no object. It's just like a free function. So your intention is for onEvent to be a norma