Beginners - C++ Forum - July 2009 (Page 17)

Quick robust code for point in polygon problem

Hi, First apologies for the very general nature of this topic. I am trying to develop a quick robust graphics engine and need to determine whether a point li...

[1 reply] : Okay. I had a stab at the second method based on the psuedo code found... (by bobsta)

by Amon Ra

Scan Codes

I wanted to use arrows in my console program, so I found on the net about those scan codes and I was able to use arrows with this '\0H' for up arrow and so on, ...

[7 replies] Last: I guess you always wanted to say that (grasshopper) to someone :D But ... (by Amon Ra)

by DragonKnight

Error C3867

hi Guys when i'm trying to compile this code for some reason it wont refere to my class when i try and call it in main?? I am now totally lost with it so any...

[19 replies] Last: Just think that everyone once didn't know how to program, If someone... (by Bazzy)

by wmheric

Linker error

Today when I try to compile the .cpp files written some days ago it gives me an error [Linker error] undefined reference to '__cpu_features_init' Does i...

[2 replies] Last: Nice, I didn't notice that thread sigh :P (Oh, a new G95 gets its M... (by wmheric)

by Nelo87

Trouble understanding.

I'm having trouble understanding this: " The class should use a structure that stores the following information: Drink name Drink price Number of ...

[2 replies] Last: Ok, understood. Thank you very much. (by Nelo87)

by kamurphy90

simple getline not working ><

its my first time doing a getline statement and its not going so well. Its very similar to this example I found: char name , title ; cout << "Enter you...

[5 replies] Last: oh found the answer from past problems in this area. Grey Wolf (1134... (by kamurphy90)

by cppuser

Question regarding percentage progress bar

Hi guys, I have one simple question here. I have a progress bar. And I have a loop: for(int i = 0; i<160;i++) { progressBar.setValue(somevalue); ...

[3 replies] Last: Thank you very much guys ! :) for(int i = 0; i <= MAX; ++i) { p... (by cppuser)

by adassus

How to do simple graphics in c++

Hi all, I just started programming (for fun) and my ultimate goal is to be able to program simple games (tetris). I was wondering how it would be possible...

[4 replies] Last: Also SDL is crossplatform. No reason to restrain yourself to only 1... (by Disch)

by Rikazu

End of chapter problem

I tried avoiding posting here again, since this is my fourth topic today. Spent 15 minutess gazing at the code, fixing typos. Now I cannot find any and it sti...

[13 replies] Last: You've tried to create a function (fToC) inside main(). I was going to... (by mcleano)

by TooSharp

Quicksort crashes on large increasing arrays

I'm doing an analysis on different sorting algorithms with different types of integer arrays (random, increasing, decreasing, nondecreasing, nonincreasing). Bel...

[2 replies] Last: helios, Thanks for the quick response. Still not getting much farther... (by TooSharp)

by wretch

Where and how are constants stored?

#include <iostream> using namespace std; int main() { //const int *p1 = (int*) &(5); //error C2101: '&' on constant //cout << *p1; const int ...

[3 replies] Last: The difference is really that '5' is a single integer value, where "ab... (by Duthomhas)

by mcleano

Destructor confusion

Apparently the following program is meant to give the output: 10 10 Destructing... Destructing... But i'm only getting the 10 10 part. Can someone e...

[5 replies] Last: Ahh yes I just compiled in VC++ as oppose to dev-C++ and it worked pro... (by mcleano)

by kmvinoth

Array storage?

can any one tell me how to store 0 to 10 power 50 values in a 1d array.when i go above 7*10^7 my compiler says size of array too large.any help is highly apprec...

[17 replies] Last: Am I the only one who feels it prudent to ask what the OP needs all th... (by Disch)

by NGen

A Pointer Array of Arrays

In a program that I'm using, arrays can only be made for up to 2 dimensions, and so I've had to make a DLL to handle this. This is why I'm doing things the way ...

[1 reply] : So, are you looking for 2D dynamic arrays? If so, this article should... (by Bazzy)

by TheSte

VC++ and Release

Hi guys, I've made my Console program and I've compiled it with the VC++ configuration Release...this will work only for my pc...the program copy some files ...

[12 replies] Last: OK, so what should your code be doing between outputting copying file... (by closed account z05DSL3A)

by msn92

Questions about Boost::Regex

Hi everyone! My goal is: to read the spesific part of the text from whole text. E.g: To get all links in the html page. If I use CLR Windows Forms Applic...

[5 replies] Last: Ok, I figured it out: CString altag=L"((<img[^>]*>)*?(<br[^>]*?>)*... (by msn92)

by azimuth

Criticism of my programming?

Mainly simple stuff I've made. I would like some criticism to make my programming methods better. I would like some suggestions and comments on how I coded th...

[5 replies] Last: Ooops. Thanks for pointing that out, I would never have noticed. (by azimuth)

by tazz25

DirectX Library Linkning Problem

I am just learning how to use DirectX in my programs, and I am using Dev C++ as my IDE. I was having no problems until the book I'm reading told me I had to #in...

[3 replies] Last: Lol, if you are programming with DirectX use VC++. I don't know what k... (by mackabee)

by adassus

Confused about libraries

Hi, I'm confused as to how libraries are used in C++. I understand that you need #include <iostream> to have access to some functions like cout and cin. Wh...

[1 reply] : All the headers are used as interface to a libraries Usually librarie... (by Bazzy)

by Scythe37

why does my compiler say that I'm converting from a char to a constabt char?

#include <cstdlib> #include <iostream> #include <string> #include <cmath> using namespace std; double convertb10(char number ,int base) { double z...

[6 replies] Last: Instead of using strcmp do if ( number == conversion ) { ... (by mackabee)

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Beginners - July 2009 (Page 17)