General C++ Programming - C++ Forum

Dear programmers, I remember in C++, when a dynamic array is allocated, the size of this array is stored right before the array in memory. Therefore compiler k...

[2 replies] Last: That is what I'm worried, Thanks! (by mimichacha)

by go for it

simple question about objects ,pointers and memory allocation

i've recently asked the same question and didn't get a good answer so ill be asking it again with some edits why they always use class_name *pointer = new cla...

[2 replies] Last: Sorry to correct in part the reply of coder777... I know I am not a pr... (by Nobun)

by credem12

HOW DLL, HEADER AND LIBRARY

Hi, guys. can anyone help me about on how can i implement in my console application and use the DLL function. I have the header file name sgs_api.h with the ...

[2 replies] Last: Hi thank you for your reply. after that i follow this info, i get anot... (by credem12)

by Mor cicek

Problem with question !!!!!!!!!!

The question is: Write a program to a string from the user. Also ask the user to enter a character. Then find the position of first occurrence of that charac...

[3 replies] Last: How to use code tags: http://www.cplusplus.com/articles/jEywvCM9/ Wha... (by coder777)

by Daleth

Natural Logarithm

More of a question out of curiosity. Why are the standard functions for natural log and log base 10 "log()" and "log10()," respectively? Wouldn't it be more ...

[2 replies] Last: Seems a little off putting though. Thanks for the response. Now I know... (by Daleth)

by yoked88

Error?

Hey everyone, I'm getting an error using cout and I have no idea why. It occurs in both implementation files, can anyone help? #ifndef H_personType #def...

[4 replies] Last: Heh, Doh!! That solved it, cannot believe I overlooked that. Thanks y... (by yoked88)

by Crayvic

random number generation

Hiya....A̶̲̥̅̊♍ kindof in a fix with a program A̶̲̥̅̊♍ meant to write.need some help please.the question is....write a program thatplays the game...

[1 reply] : Someone asked the same question here: http://www.cplusplus.com/forum/b... (by xismn)

by Mher Didaryan

who can explain? (reference)

#include <iostream> void func1(int &a); void func2(const int &a); int main() { double d = 5.5; //func1(d); error,,, why? func2(d); // ...

[4 replies] Last: thanks a lot xerzi (by Mher Didaryan)

by Niven

Collision Detection Help

I'm trying to create a general function for collision detection that I can use in a variety of my programs so I don't have to try to make one every time. I've a...

[4 replies] Last: Thanks for the code. I think with just a few modifications it could be... (by Niven)

by bmardanzadeh

UVa 10656- Maximum Sum (||)

Hello I've written the below code for Maximum Sum || problem. Here is the linke: http://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=sh...

[2 replies] Last: Yes I corrected that part but still getting PE. (by bmardanzadeh)

by sun1520

Class Templates

Ok so i had this code which gave me following output Elements in List: 2 3 4 5 6 7 8 9 10 11 12 Elements in yourList: -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 and th...

[6 replies] Last: It's a pity the opening post was edited so much that the original prob... (by andywestken)

by alantheweasel

C++ Template Question

I have tried the following code , it doesnt work #include <iostream> #include <string> using namespace std; template <typename T> T add (T & a, T & ...

[1 reply] : You'd be creating a temporary value (implicit conversion from int to d... (by closed account o1vk4iN6)

by coder1

something going wrong

if ((b !=-1) && ((y-1>=0 && b [y-1]==b ) || (x-1>=0 && b[x-1] ==b ) || (x-1>=0 && y-1>=0 && b[x-1][y-1]==b ) || (x+1<n && y-1>=0 && b[x+1][y-1]==b ) || (...

[2 replies] Last: its outputting YES 4 times but the 1 has no adjacent integers which a... (by cire)

by Crakrjack

Strange issue using input streams

I'm reading in a .txt file, the first couple of lines are: 5 Burglar Earthquake Alarm John Mary The first line is the number of variables which are lis...

[6 replies] Last: Thanks to both of you for your help, I've settled on another method th... (by Crakrjack)

by jasonrobertz357

ATM Machine Simulation Logic Help

If you were me and creating an ATM simulation program, what would you check first if the user have entered the amount he/she is going to widthdraw? The balance ...

[4 replies] Last: Oh I didn't read that properly. I was thinking there was a function fr... (by Olysold)

by dkumar3

Wrapper object

Hi, I am trying to combine objects defined in third party's lib. 1) First of all, I want to perform the conditional operation like this: if(Selectio...

[4 replies] Last: Thanks for help ne55. I appreciate it. (by dkumar3)

by mukulabdagiri

Help using 0xDEADBEEF in a memory pool problem

Hello, I am working on a problem in which the an integer pointer is initialized to 0xDEADBEEF. It is allocated memory in my memory pool and then deallocated ...

[5 replies] Last: do not use it. In the release version it's uninitialized memory (by coder777)

by mr5

C++ removing chars from a std::string

What's wrong with my code: std::vector <unsigned char> _colors (QD * 20); struct RGB { RGB() : R(0), G(0), B(0) { } un...

[1 reply] : I would highly suggest using a debugger to look at your code step by s... (by Zhuge)

by mathewfer

Conversion between char & string

Hi, I have a question on conversion between char & string. I have cut & pasted the part of the code from my C++ code and my function "decryptPwd" uses C sty...

[7 replies] Last: Hi All, Thank you very much for all the replies. I managed to combine... (by mathewfer)

by unholyCode

error C2678: binary '=' :

I know that this is home work and I don't want no one to take duty to solve the problem.I want to know where is the error.Here is my code and I am can't figure ...

[2 replies] Last: no operator found which takes a left-hand operand of type 'const CStu... (by andywestken)

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General C++ Programming - June 2013 (Page 17)