General C++ Programming - C++ Forum

I just finished a rough draft of my tetris clone. Could anyone give me some feedback? Thanks! http://web.ics.purdue.edu/~cjreilly/Blocks/

[1 reply] : PROTIP: When posting a complete program in a programming forum, don't ... (by helios)

by translore

Question about inheritance

I have a base class called Node. Inside the class I have a data member that is a vector to keep track of children. I want to make a derived class called LeafNod...

[3 replies] Last: Errr.... It does inherit private stuff. It just can't access it.... (by Disch)

by scottwuzhear

Preprocessor Directives

A buddy and I are working with SDL on a game. Unfortunately, he is confined to Windows at the moment, while I develop in Linux (SDL is cross platform). The pr...

[4 replies] Last: Thanks everyone! That solved the issue. (by scottwuzhear)

by kevinchkin

string inside Union

Hi Guys, Can't we have string inside unions? When I try to use class A { public: string str; }; union { A obj; }p; It keep saying t...

[7 replies] Last: i think no class object will go inside a union because even if you ... (by kevinchkin)

by rubecuber

Visual Basic 2008 difference calculating

How do I make a a program in vb 2008 calculate the difference between the first thing, and then the last thing entered? For example, I tabulate the amount of...

[1 reply] : You might have better luck asking this question on a Visual Basic fo... (by Disch)

by sable0

Wrong output - Any ideas?

sdfsdfsdaf

[1 reply] : You never call the getvalues() function for your AreaVolume1 object. ... (by cjr9968)

by guidance51x

File I/O

Hello Everyone I've been struggling to figure out what I'm sure is a simple problem. Say for example I'm creating a file that lists a description of a person...

[3 replies] Last: You can ignore all the data before the newline character eg: you... (by Bazzy)

by lemaire

socket programming

Greetings, I am a beginner in socket programming and have been trying to set up a c server that accepts connection from a php page. The problem is that i am un...

[3 replies] Last: Douglas Comer's example can be found here: http://rtes.cn.nctu.edu.tw/... (by kbw)

by tukuniata

revision control system(code management)

hi all, i need some help from you. I would like to know if there is any revision control system in visual studio. if yes how to use it. if not how can use one ...

[2 replies] Last: thanks man for your help i m googling vss right away (by tukuniata)

by kevinchkin

Weird Problem

Hi Guys, Code Snippet 1 with malloc using namespace std; struct Et { int i; string s; }; int main() { Et o; char da ; memset(da, NULL...

[5 replies] Last: The difference between malloc and new for C++ objects is that new, asi... (by jsmith)

by satchmo05

Retrieving data from a file

I am new to fstream, and I need help ASAP! My goal is to make a program that opens a .dat file and it checks to see if the number exists in the file. If it d...

[4 replies] Last: the full working program is this: #include <cstdlib> #include <... (by writetonsharma)

by translore

STL vector, STL list, new, delete question

Hello! I have two for loops below. The first for loop puts node objects into a vector. The second for loop uses the delete operator to free memory creat...

[2 replies] Last: Cool! Thanks! (by translore)

by wonkdance

Linked list and file I/O

code begins here -------------------------------------------------------------------- struct Bartender { char ID ; char name ; }; struct Nod...

[2 replies] Last: Thanks for replying, computereuip. I got them cleaned up. I had no ide... (by wonkdance)

by rushhour

modifying main() to enable interactive data entry

Hi I am a little stuck with a fraction program where currently it uses simple but inflexible literal values to show the adding of a fraction, It has three fi...

[2 replies] Last: Thanks, your reply came too late however, I figured it out in the end. (by rushhour)

by matrebatre

Optimisation question

In my code, I have to access variables in a struct about 1000 times. I was wondering whether it is faster to copy the struct to a local variable first. For e...

[4 replies] Last: But I always thought a.b is faster than a->b, because a->b requires t... (by Disch)

by ltrane2003

Pass by reference differentiation problem

My task is to write a program with a sub function that will differentiate a polynomial when the user enters 6 integers. Also it should return true if the the re...

[3 replies] Last: Btw: You can still "optimize" the code: a *= 5; // instead of a = ... (by onur)

by lidong

HOW TO CALL PRINTER TO PRINT SOME TEXT IN C++

HI!..Im planning to make a program that print a reciept but i dont know how to call the printer to able to print what i want to print..any idea or comment? ...

[1 reply] : It's very easy inside of the .NET framework. Other than that, I don't ... (by closed account S6k9GNh0)

by KarlisRepsons

val % size >= size?!

I have this short question: under what obscure circumstances can this happen?

[6 replies] Last: val is unsigned. unsigneds can never be negative. Lines 10 and 11 ca... (by jsmith)

by simov

STL vector Problem: push_back derived object but get base object

Hello, I have a problem about STL vector. I expect vector can hold my derived objects. But it doesn't. My program is like this: ===============================...

[6 replies] Last: Of course it won't. The declaration vector<CBase> allocates memory ... (by jsmith)

by shaoen01

Pass by Reference (1,2)

Hi, I am asked to pass by reference to this method, but seem to be meeting with some errors. If i remove "&" from int solve(P &p) it would work, but i nee...

[23 replies] Last: Thanks Aakanaar and jsmith for the explanation. So actually if i di... (by shaoen01)

C++

Forum

General C++ Programming - March 2009 (Page 15)