General C++ Programming - C++ Forum

Oi! I'm trying to build a menu for a text based rpg. So that whenever your done "doing something" it always comes back to it. I was wondering if there is a way ...

[3 replies] Last: By 'standard' I did not mean 'specific', but rather that this it is no... (by Athar)

by vincent90

Segmentation Fault with Fork()

Hello, im having a problem with my vending machine code. We are using the Fork() fonction, basicly, the main program has to call 2 others program. The vendi...

[2 replies] Last: Thanks! (by vincent90)

by zelin

hexa decimal problem

i am just messed up .. how can i store a hex no. as an adress of a varaible e.g i got an integer value x i need to convert it into hexadecimal then need to ...

[5 replies] Last: [quote=zelin]i need to give a manual address to a specific variable ... (by Galik)

by mauricioramos

sprintf inside a for loop

Hello, inside a for loop I need to perform "n" sprintf commands to compose a sql statement. For this, I´ve been using a vector<char *> with the values I nee...

[2 replies] Last: Hello kbw, checking some older source code, we found a solution tha... (by mauricioramos)

by attaboy

vtable offset 0

What exactly does this mean? function=&virtual table offset 0 (The function is a static member function pointer) This is a message from gdb. I'm trying t...

[8 replies] Last: Thanks a lot :-) (by attaboy)

by Trav

Configuration File

The following code I'm using creates a runtime error, I'm unsure why. What have I done wrong here? Also will "\"'s in the Config file be counted as escape ch...

[2 replies] Last: szPath is always being set to the default now. char szPath ; DWOR... (by Trav)

by niceboy13

convert c++ to c ; Library Source

#include<iostream.h> #include<conio.h> #include<stdio.h> #include<string.h> //=========================== //=========================== class book { ...

[1 reply] : I'm sure there's a question somewhere, I just can't find it. (by kbw)

by brian34

Printing Ascii symbols

I am trying to simply print an ascii code symbol in a visual studio c++ console app. For example: when I run a program that contains: cout<<"☺"<<endl; ...

[10 replies] Last: Super! Thanks a lot. (by brian20)

by agajantorayev

unidentified problem with stl

I got the following code: #include <iostream> #include <fstream> #include <algorithm> #include <vector> using namespace std; //checks whether the giv...

[2 replies] Last: THANKS kbw VERY VERY VERY MUCH! for q!!!!!!!!!!!! (by agajantorayev)

by indigo

Top Level (^) objects

Hi, can someone give a brief explanation of so called top level objects (with ^ near type) that appears in windows form applications? I'd appreciate that. Als...

[9 replies] Last: Ok, this is how it is - in my client app i have this code: public: v... (by indigo)

by sysabod

C++ STL string pointer assignment

Hi,all. Codes first. #include <string> #include <iostream> using namespace std; int main(){ string* str1; str1->reserve(113); if(true) { string...

[3 replies] Last: I would just like to point out this line here: if (str1) { de... (by closed account 1yR4jE8b)

by grana

Associative array/std::map/dense_hash_map slow

Hi, I've some trouble implementing a kind of associative array. Basicly, the structure is like the following namespace mine { struct myHash { ...

[no replies]

by rahulmm

inverse of a matrix

how should i write a prog to get an inverse of a matrix it comes in what area of c++

[6 replies] Last: I'm not very familiar with matrix libraries but lapak http://www.netli... (by RedX)

by new2programming

Game maps

Hi i have been following a tutorial on how to make a jump and run game. However im not sure how the game map is generated. I want to make it longer with more ob...

[2 replies] Last: What do you exactly want ? (by bluecoder)

by unregistered

getting the iterator to a vector of iterators

I get a compiler error at this line, any ideas? vector<set<SomeClass>::iterator>::iterator iter = <Obj>.begin(); <Obj> is of type vector<set<SomeC...

[3 replies] Last: You must be careful to read all the side-notes about iterators when st... (by RedX)

by scapal

multiple inheritance wizardry

Hi I'm a bit confused here :-| The following code displays: func_1 func_2 where I would expect it to display func_2 func_2 Any explanation? ...

[10 replies] Last: dynamic_casts and static_casts are, i know people will complain about ... (by RedX)

by whitesnow

Error in structure, trying to cin info from text file.

#include <iostream> #include <cmath> #include <iomanip> #include <fstream> using namespace std; void getstudents(); struct stinfo { char stude...

[9 replies] Last: http://cplusplus.com/reference/string/string/c_str/ ^That's how. *win... (by Albatross)

by cshong

Firewall programming

We are studying computer science course. For our final year project, our group is considering making a firewall software with parental control feature. If we...

[3 replies] Last: Reply to Incubbus, the time given is 1 year. Reply to Computergeek0... (by cshong)

by brian20

Getting characters to show up on "run" screen.

When I run a program with (for example) the line: cout<<☺<<endl; (I get the ☺ by holding in on ALT and hitting 1) Instead of a ☺ showing up on the...

[1 reply] : What was wrong with your existing topic? http://www.cplusplus.com/for... (by Duthomhas)

by TorukMakto

How to get classes to call upon each other?

I have a class defined above int main, and i have a class in a .h/.cpp format. I have the #include "blah.h" in my main .cpp file. But i can not use the classes ...

[4 replies] Last: After re rereading my post I think I could be a little more clear. he... (by wtf)

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General C++ Programming - May 2010 (Page 8)