General C++ Programming - C++ Forum

Why is the copy constructor in this code never called?

Hi, I have the following code: class A { public: A(){ cout << "A.ctor()" << endl; } // the others methods have similar couts }; A f() { ...

[2 replies] Last: Thanks : ) (by Jordan Stefanov)

by ribenaman

Trouble with containers

Hi there. I recently had to create my own container class for a project, however I am having some trouble in getting it to work and would be grateful for any he...

[3 replies] Last: /facepalm Thanks guys, that was a bit stupid on my part. I got so caug... (by ribenaman)

by unkn00wn

How to get rid of segmentation fault

/* for n in items: if n is argument: push n if n is operator: a = pop b = pop push a+n+b answer = pop */ #include<iostream...

[2 replies] Last: Thanks ! Resolved ! (by unkn00wn)

by azi

Drawing shapes

Hi

[6 replies] Last: azi, please read this article regarding deleting posts: http://cpluspl... (by Stewbond)

by Shaurya

ERROR!! Sum of series

This is the series here: X+X^2/3!+X^3/5!+.......+X^n/(2N-1)! I wrote the code but a compile time error occurs which says "call to the undefined function fac...

[1 reply] : I answered your question here. No need to double-post. http://cpluspl... (by Stewbond)

by naskopw

Automatic login

Is there a way to make a program that logs you in a program that requires login automatically when you set your ID and Pass. I mean you type your data and it si...

[3 replies] Last: Those are languages. An environment is your OS (Windows, Mac, Linux, e... (by ModShop)

by CSharpque

change operation on stack

i m learning algorithm for changing Ith element of stack so change algorithm is CHANGE(S,TOP,I) 1 if TOP -I +1 <=0 write('UNDERFLOW'); 2 Return (S[TOP...

[9 replies] Last: thanks viliml...now i got the point... thanks for your answer (by CSharpque)

by closed account 365X92yv

Opening a txt file outside of your C++ project

Here's my dilemma. I have a txt file that is linked with a game I play. I can read in from this file and grab data from it. The only problem with this is the tx...

[4 replies] Last: Alright. That works. Thanks. (by closed account 365X92yv)

by jon747jon

someone tell me whats wrong with my code

// prac.cpp : Defines the entry point for the console application. // #include "stdafx.h" #include <iostream> using namespace std; int _tmain(int arg...

[1 reply] : Could you elaborate on the problem a little bit more? I don't understa... (by Zhuge)

by h9uest

The most weird problem I've EVER seen

I'm working on a problem on topcoder, and below is the code I've got so far. To illustrate the problem, compile the code with "g++ -std=c++0x main.cc" and run ...

[8 replies] Last: Thank you all for the replies! @Pravesh & cire: You are the men! I do... (by h9uest)

by Hoann Huy

help:saddle problem in c

//max_colum min_row #include<stdio.h> #include<conio.h> #include<string.h> #define N 20 #define M 20 int min_row(int a ,int m,int i) { int min,j; min ...

[2 replies] Last: ok .man because I'm new user so ......and i try but I can't put my cod... (by Hoann Huy)

by Hoann Huy

Help me about C

I'm begin learn c.and i'm from vietnam because I'm speak english not good. my question:Implement :stack as array or as linked list???????

[6 replies] Last: ok .thanks duoas. (by Hoann Huy)

by LB

Copy function at runtime?

I have a library with a function that accepts a function pointer and a parameter to give the function. I'm wrapping the thing in a class and so for each instanc...

[5 replies] Last: Nevermind, I misunderstood how it works. It calls the function once ... (by LB)

by RobertTheBeast

How to use try\catch\finally\throws.

What exactly are these keywords. and an example of their implimentation? every time I try to use these I get errors. I understand they help in catching errors..

[3 replies] Last: clanmjc: You're throwing a const char* but nowhere do you catch it ;) ... (by LB)

by lda106

While Loop Issue

I cannot fix my while loop issue. It reads the first line, but then keeps reading the same line. I am reading from a text file. Below is my code: // #incl...

[1 reply] : http://www.parashift.com/c++-faq-lite/input-output.html (by Peter87)

by vincegata

I get compile error on global variable.

Hello, file test.h #include"globals.h" int VAR = 23; file test.cpp #include<iostream> #include"test.h" using namespace std; int main() {...

[11 replies] Last: I'll see how it goes with globals, might change later. Thanks for your... (by vincegata)

by oonej

Errors on Linux Machine (but not on my pc) when compiling

Is there a definitive answer to these problems? or should i post all my code? want to avoid doing that due to homework assignment No errors when I compile on ...

[3 replies] Last: not sure for the weird errors, but i had a typo in the header file.. a... (by oonej)

by friko16

Assignment between different objects

Hi all. A have two classes: STowar and CTowar-internal. The goal is to assign a STowar object to CTowar_internal object like this: CTowar_interanl twi; STow...

[5 replies] Last: First: { CTowar_internal* ret = new CTowar_internal(); //memory leak ... (by clanmjc)

by Bouya

Difference between namespace and include

hi i want to know what is the difference between using namespace and include. in both of them , we call librery to use class in program. So can any one expla...

[10 replies] Last: Hopefully the point was not lost :) (by Moschops)

by michael10024

Mutations Problem

Nothing Here

[4 replies] Last: Can you explain me what have you done? If you write mut.resize(5) inst... (by michael10024)

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General C++ Programming - March 2012 (Page 22)