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Beginners - August 2012 (Page 6)

Hi - I'm constructing a string object by an initial assignment and a large number of concatenations (using the += operator). After the string gets to a certa...

[4 replies] Last: I appreciate the feedback anyway; it's a good reminder. Apart from th... (by mzimmers)

by CppJim

The Very Evil Deck of Cards

Hello! I have been tasked with in my opinion a hard programming task. It is well, Challenging to me.(I just started C++ :P) The main goal is to print out a "...

[2 replies] Last: xD Thank you very much! (by CppJim)

by samrux

Header files and C++ files

Some questions: 1.-What's the difference between a .h and a .cpp, when used for functions and classes? 2.-What exactly happens when I include a file in a C++...

[13 replies] Last: You should only include headers in files that need it. IE: if main... (by Disch)

by Madguy

Boolalpha question

I was practicing with string methods and I wanted empty() to return true or false instead of 1 and 0 so I used boolalpha but now it returns 4098false or 4098tru...

[4 replies] Last: Yeah you are right, thanks (by Madguy)

by grutsch

sorting of classes not working

Hi all. I have a class "ExampleSentences" with a private member std::string _simpHanzi; I have another class "Vocabulary" with a private member std::ve...

[9 replies] Last: Did you added const to getSimpHanzi() in the declaration and definitio... (by R0mai)

by Ch1156

Polymorphism program questions (1,2)

Ok so i was watching this video on polymorphism and it was way better than the others, i kind of understand stuff better but there are some things im confused o...

[21 replies] Last: I also agree with naraku9333. You don't want to get ahead of yourself.... (by coderguru)

by vckngs7

warning: adress of local variable '<variable>' returned

I am trying to pull from my .bashrc an environment variable CUSTPATH. I want to store the various directories in this variable in a vector and then return a poi...

[1 reply] : The error is just what the warning says. You're returning a pointer to... (by Athar)

by EindacorDS

Question about class access functions

I'm trying to make a relatively simple game, and i'm working on how the inventory system will work. The "loot" in this game is actually paintings, and I have my...

[2 replies] Last: so i can embed setOverallCondition() to run at the end of addAbuse()? ... (by EindacorDS)

by guyu

C++ primer 5th. Bad book? examples inside

I am on pg 70. Already they have stopped giving source code and there is not answer key. Seems like i am reading tons of definitions with out applying them to...

[3 replies] Last: Have a look here: http://stackoverflow.com/questions/388242/the-defin... (by closed account o3hC5Di1)

by Aceix

Aid needed

I want to know why the print function displays val1 and val2 wrongly Code: #include <iostream> using namespace std; template <class> void print(); ...

[3 replies] Last: Thank you all. It's working perfectly!!! (by Aceix)

by KodeBreaker

Creating "map", problem with array in a class?

Okay, so I'm working on a school project. It's a text-based RPG, and I want to have a "map" that the player can traverse through (not a physical map that shows ...

[1 reply] : Hi there, Try doing the following: Map1.h: #ifndef MAP1_H #define ... (by closed account o3hC5Di1)

by Mrcerimo

Undefined reference to error

Hello there! i haven't written any c++ code in 3 months, so I'm little rusty. but today I opened an old project and tried to compile it and I got this error: ...

[3 replies] Last: Most welcome, glad I could help. Have a nice day, NwN (by closed account o3hC5Di1)

by chameleon

Avoid prev/next pointers on a really big list?

I want a std::list<Node> with 10(at least) to 4000000000(at ambitious) elements. sizeof(Node)=24. Standard allocator works with one new per element, and...

[2 replies] Last: Maybe a disc based random access db such as Berkeley DB http://en.wik... (by mik2718)

by vckngs7

Knowing which exception to catch

I am not fully understanding exception handling. My situation is as follows. I am trying to take an input to a program and parse it into an int. I am using a...

[3 replies] Last: cannot figure out what kind of exception atof throws and how to stor... (by Cubbi)

by Wisely Done

2D platformer game

Hello, I'm still working on my 2D platformer game using SFML. I would like to ask, should I have a sprite for every tile I draw on the screen, or should I use o...

[6 replies] Last: Ah, sorry. I was checking for collision only with the surrounding tile... (by Wisely Done)

by Aceix

I need some clarification please

This is giving me some kind of error I do not understand: //class templates & friend functions #include <iostream> using namespace std; void print(v...

[8 replies] Last: Friends are indeed not actual members of classes (although I'm not sur... (by closed account o3hC5Di1)

by ts4525

Question about arrays

I am reviewing some C++ code and ran across the following line of code: class->method(label, array + integerValue) the code in question is: array + integer...

[2 replies] Last: Hi there, Let's say integerValue has value 25. In that case what the ... (by closed account o3hC5Di1)

by xzbit

using class library..help pls

hello, i have these two projects one is a class library and the other one is a WinForm.. i add the Class Library in Winform as reference and so on.... in Class...

[2 replies] Last: i already tried that first and got me an error,,i forgot to add ^ symb... (by xzbit)

by jojo25800

loop question.

How can i loop the question whenever the user inputs an invalid answer. for example.. /* question #1 */ cout<< "#1. 5+5=?" <<endl<< "A. 10" <<endl<< "B. 2" <...

[3 replies] Last: the easist way but the dangerouest way: goto sentance maybe worked,but... (by ghking)

by zkl

Data type and its size

Hi, Can someone explain to me this data type and size. double denominator, numerator, result; Is it about having these numbers in decimals and not whol...

[7 replies] Last: Thanks for the explanations :) (by zkl)

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