General C++ Programming - C++ Forum

by DefectiveCoding

Drawing a Texture using a matrix (OpenGL)

I am trying to make a more basic version of tiny tanks using SDL and OpenGL. To draw the textures to...

[1 reply] : If you have two linear transformations (in your case are affine transf... (by helios)

by ostar2

xor encryption

Hello, I am trying to encrypt the output from a java application to store passwords any help would b...

[6 replies] Last: You have an example here if you use windows: http://msdn.microsoft.com... (by modoran)

by jm92590

Returning a Comparison value for Linear and Binary search problem

Ok, so my current issue with my code is that I cannot figure out how to properly output a comparison...

[2 replies] Last: Thank you so much! This works perfectly. (by jm92590)

by DeadEli

to_string() issues

I have been trying to convert an integer to a string, and I ran across the function to_string(). I t...

[5 replies] Last: Use a stringstream, this will work in every compiler without any speci... (by modoran)

by didierB

qwt or GNUplot or others...?

Hello all, I write because I like to know which library you use to plot your graphs usually in your ...

[no replies]

by tbaker530

how to make long form of roman numerals???

i have long form packed down farely well. i just need the last 2 "nothing" and "imverytired" to be s...

[1 reply] : also the **cout<<i<<"="<<nothing<<"="<<imverytired<<"="<<nothing<<"="<... (by tbaker530)

by Nekusta

Linked List using only structs

I am trying to make a linked list using only structs. Thing is, I'm really bad at programming. And t...

[no replies]

by cgardner65536

Placing member function code for templated class in seperate source files

Hey everyone, I'm trying to write a templated class and place member function code outside of the cl...

[1 reply] : You can't. You have to put them all in the header file. As for your c... (by firedraco)

by Script Coder

Whats the problem

I have recently tried to make a sieve for project Euler. it works for 10, but not for 2 million, ple...

[2 replies] Last: 186240581510 for 2 m 4469579551475 for 10 m Sooo What are you exp... (by bmiller)

by caibbor

Safety of reading past end of file

I've googled around and didn't find the answer I'm looking for. appparently, eof() and feof() ret...

[6 replies] Last: Your message makes me LOL!!! C++ is 100% bckward compatible with C, a... (by caibbor)

by wanting2learn

compare IP address against a range.

I have a list of IP addresses and subnet masks I need to compare an incoming client IP address an...

[1 reply] : If u have IP in the form 123.456.789 u can parse it into 3 parts and c... (by soranz)

by FeZedra

C++0x/11 discussion thread

I'm not sure if this is the right section, but I thought I'd give it a go. Also, I'm not sure if th...

[12 replies] Last: @rapidcoder, Yea I have no experience with them, just read somewhere ... (by ResidentBiscuit)

by BroncoAG

Encryption Help

I have to write a code for the caesar cipher where you enter whether you want to decrypt or encrypt ...

[3 replies] Last: U'r not getting any result because the variable set on line 40 never c... (by soranz)

by dolle39

addition of char?

Hi! I am trying to learn C++. I have a question about addition of addition of char. I have made a cl...

[4 replies] Last: x = infinity don't think it's zero :P Anyways, if OP is still here, ... (by closed account o1vk4iN6)

by iMunk

Vector and Struct

Hi everyone, I need a good tutorial about the use and management the library vector within the struc...

[1 reply] : Don't do this. The size of an array should be a compile time constant... (by kbw)

by zarzor2010

parallel OMP with many "new" operators

Hello All, I have a code that uses multi threads using OMP. However, Inside the code I allocate ...

[13 replies] Last: Do you mean the tcmalloc library there? Yes. (by modoran)

by sigmablack

File Handling?

how can i get rid of constantly opening and closing file? while(1) { //open file //get key ...

[9 replies] Last: Yes it works fine, i am thinking about flushing the stream after speci... (by sigmablack)

by Biorapture99

I Want to know why this happens with getch?!

Hey guys, this is my code ! #include <iostream> #include <stdio.h> using namespace std; int...

[2 replies] Last: signed int has limit -32767 to 32767 Unless, you are working on an a... (by viliml)

by Vijaybvk81

Best Search algorithm

Hi everyone, I have a unique case wherein i have list of devices(8 in mycase) and each device can h...

[1 reply] : What you have there is a list of priorities. All you need to do is ke... (by webJose)

by vrakas

C file I/O vs <fstream> (1,2)

Can someone please explain to me when using C FILE I/O is faster than using the C++ <fstream> librar...

[27 replies] Last: Because ofstream bar = foo(args); looks better than ofstream bar; f... (by ne555)

General C++ Programming - July 2012 (Page 12)

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