51,593 Topics
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| | Hi, I want to use a template function that is used to convert strings to numeric types in a non-templated class. I have: [CODE] class Reader { ... template <class T> T ConvertString (const std::string str); }; [/CODE] Is it possible for me to define the template function in an … |
| | Hello guys as i see this is a little error and i don't know how i can't fix it so the following are the main and the header file from the book i learn from: main: [CODE]#include "../std_lib_facilities.h" int main() try { vector<int>numbers; int number; cout << "Enter the numbers …  |
 | I am interested in learning simple 16 bit interaction of code between Turbo C++ 3 and Masm 6.11. Could anyone describe how that would basically work in terms of what statements in either contribute towards the interaction. Thanks.  |
| | Hello guys as i see this is a little error and i don't know how i can't fix it so the following are the main and the header file from the book i learn from: main: [CODE]#include "../std_lib_facilities.h" int main() try { vector<int>numbers; int number; cout << "Enter the numbers … |
| | I would like to ignore empty line and line started with # [CODE] std::string line; while (getline(input,line)) { if (line[0] == '#') continue; if (line[0] == '?') continue; ... } [/CODE] Where ? is, I would like to put the end line character, but what is it in C++? |
| | I am only a very beginner and was wondering if anyone can give me some help in determining how to fix the error messages i keep getting when i try to compile. I have been pulling my hair out for 3 days. Any help is much appreciated! attached is the … |
| | This program refuses to take foom as input, yet if I were to put "matrix.txt" into the function instead of foom, it would work fine. [CODE]#include <fstream> #include <iterator> #include <sstream> #include <vector> #include <string> // needed? using namespace std; typedef vector<double> Vec; typedef vector<Vec> Mat; Mat readMatrix(string foom){ Mat … |
| | I am only a very beginner and was wondering if anyone can give me some help in determining how to fix the error messages i keep getting when i try to compile. I have been pulling my hair out for 3 days. Any help is much appreciated! attached is the … |
| | Hi, Absolute newbie to cryptography. I'm looking for C++ open source code (to be compiled on Windows, Mac, linux), for doing the following: 1. Generate private+public keys (need not run on all platforms). 2. (server side) Adding a digital signature to an XML document using a private key. 3. (client … |
| | I am using Visual Studio 2008. I created a windows Console project and wrote my code. it compiled well and the program created a default .exe file. Now i created another project. this time its a C# project, and i am trying to access the functionality from the C++ project … |
| | Hi I am implementing a "Star Craft" game and I have troubles on my A* algorithm. I followed the steps in [URL="http://www.policyalmanac.org/games/aStarTutorial.htm"]here[/URL] and created my own implementation using object oriented c++. Now when I have say 32 x 32 grid, and I need to move 1 unit, it takes for … |
| | Hi All, Can you please help me to understand why the following code is behaving this way? I think both outputs should be 1 ( 1 means const T), but its not!! [CODE] template <typename T> struct IsConst{ enum {isConst = 0}; }; template <typename T> struct IsConst<const T>{ enum … |
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| | heeey guys i want to make predator and pray simulation and i made the 2d array i just don't know what to do next i need help !!!!:S [CODE]#include <iostream> using namespace std; void printGrid(char grid[][20], int w, int h); int main() { // Create a 20 by 20 grid … |
 | I wanted to have a vector<string> and a vector<double> in my class so I used forward declarations below: [CODE=c++] class string; template <typename T> class vector; [/CODE] But I recieve the error: [ICODE]field 'varname' has incomplete type[/ICODE] for both vector<string> and vector<double> variables. I searched internet for this error but … |
| | Hey guys I have a program im doing for fun, I need to be able to enter a minimum exponent and a maximum exponent as well as a base. CANNOT USE THE POW() FUNCTION. Ex. minimum exponent = -2 maximum exponent = 3 base = 2 output: base exponent result … |
| | Good Afternoon, I am working on a project in which I would need to create a matrix of nxm dimensions, in which the top, bottom, left and right edges should have the value 1 and the interior of the matrix should be a random between 0 and 1 with a … |
 | Code::Blocks isn't working. I recently reinstalled to get a newer version and when I hit build I get the following error: [CODE]mingw32-g++.exe -Wall -g -I"C:\Program Files\CodeBlocks\MinGW\include" -c D:\Programming\C++\TESTINGOPENGL\main.cpp -o obj\Debug\main.o Execution of 'mingw32-g++.exe -Wall -g -I"C:\Program Files\CodeBlocks\MinGW\include" -c D:\Programming\C++\TESTINGOPENGL\main.cpp -o obj\Debug\main.o' in 'D:\Programming\C++\TESTINGOPENGL' failed.[/CODE] Please help! |
| | I'm getting a runtime error, and I can't figure out why. I'm developing the insert method of a btree. Below is the code of insert() [CODE] void insertar(btree* r, int dato){ int pos=0; btree* encontrado= buscar(&*r, dato, 0); //buscar() searches if [COLOR="Red"]dato[/COLOR] already exists if (encontrado==NULL) printf(" data already exists"); …  |
| | Hello everybody. Just a query (in fact two) I have a reasonably huge matrix type data which is to be used via some other calculations, In the matrix are values of 1s, 0s and -1s which will appear in random and the actual i-jth position is important. Is it any … |
| | [CODE]#include "stdafx.h" #include<iostream> using namespace std; class A { public: A(){} void setdata(int s) {t=s;} int getdata(){return t;} protected: int t; }; class B: public A { public: B(){} }; void main() { A a; a.setdata(3); B b; cout<<b.getdata(); }[/CODE] Why I cannot get an output of 3 here? Can …  |
| | Hi, in my code the class CFactory has a non-type template parameter TStaticMemberFct which is a static function of a different class that should get called when Wrapper() is called via a CInterruptDelegate object. But it seems that Wrapper() gets already called when it is passed as the CInterruptDelegate constructor … |
| | Hi, Why is it that when I remove(commented out) the inner j for loop and all it's contents, the cmd prints out my desired output. However, replacing back the inner for loop, it gives an incorrect output -> my counter values are wrong when printed. Can anyone spot what I … |
| | Hello All Recently I go through the concept of virtual function in C++. I have confusion with how many vitual pointer and virtual table for a single class are created? And if the class is inheriing some other then what will be the situation? |
| | Ok, in a very simplified version ive got to write a C++ app to interface with a joystick and play various sounds depending on its position - Its a USB joystick and I will have a QT GUI. This app already exists, for Windows/C# . I just need help porting … |
| | Hi I have never come across such code before. I can't make out what it is [CODE]SockerManager::SocketManager() : sockets(0), events(0), nSockets(0) {}[/CODE] Could someone tell me what does something like a() : b() mean? Thanks Devesh |
| | Hi, I have just started learning classes and I have to make a matrix class. I know matrix math so that is not an issue, basically I have an h and cpp with function names and parameters and just have to define them. My problem is that Im stuck at … |
| | Hello Everyone! So I have an assignment to create a program to read in data from text file. I managed to get that part, but I'm having trouble with two areas. 1. Having the names read from the display read into a 10x3 format (10 rows, 3 colums/seats.) Expected output: … |
| | I have a Plain Text matrix file (called q.txt): [CODE]1 0 0 0 2 0 0 1 1 0 0 1 1 1 1[/CODE] which I would like to read into a matrix, which is a vector containing vectors (which contain doubles). My current codes yields the error "newReader.cpp:22: error: … |
| | [code] #include <stdio.h> #if 1 //! Set Pin string const char* const ONCLI_SET_PIN_CMD_STR = "set pin"; #endif const char* const SINGLE_APP_STRINGS[] = { ONCLI_SET_PIN_CMD_STR }; int main() { printf("%s\n", SINGLE_APP_STRINGS[0]); getchar(); // pause return 0; } [/code] Line 12 Error message... [code=text] 12|error: initializer element is not constant 12|error: (near … |
| | Hello Everybody. I'm with a classic problem in C preprocessor concatenation. This is the situation: [CODE] #define BAUDRATE(VAL) (B ## VAL) //... const uint32_t BAUDRATE_VAL[] = {1200, 2400, 9600}; //... br = BAUDRATE(BAUDRATE_VAL[i]); //... [/CODE] This code, result in the error: BBAUDRATE_VAL undeclared I need that the result of concatenation … |
| | hello, I'm currently writing a program to write a website easier, but i don't know, how output " to a file? thank you very much for help |
| | Is there a more efficient way to do this? [CODE] vector<int> myvec; vector<int>::iterator it; /////// // Count # of iterations int i = 0; while ( it != myvec.end() ) { ++it; ++i; } [/CODE] Just seems expensive to me. |
| | hi all, I have this minor problem which is making me go cranky at the mo.. Can't think straight, need some insights to what I can do... Below is the code which I am working on which takes the test sample values stored in my test 2D array subtracts the … |
| | okay so i have to make a windows form app in c# for a car catalog company as an assignment for school. i was about half way done, and i simply dont have time. i could email you my half done app if you would like. i have all the … |
| | OK, so I already program is C#, but I am taking a C++ class. I want to create a windows forms application and have other classmates create some classes that we can all put into the windows forms application to create a final project. Well the entire book only takes … |
| | Hi I have a problem with some code. Basically what the program is supposed to do is to take in a minimum exponent and a maximum exponent and a base. Then its is suppose to create a table displaying the base to the power of the minimum exponent to the …  |
| | hello , I need to add this include: #<graphic.h> to dev c++  |
| | Hi I have a problem with a code I made, some save editor for some game. The code suppose to write 2 bytes to a specific offset in some file. The file's short integers are saved as little endian. everything works fine, but when one of the integers equal 10, … |
| | Hey everyone! Well I'm sooo close to getting the names to align BUT there is 1 slot that is skipped in the non-smoking section and a few in the smoking section and i can't figure out why. The Data needs to be displayed in a 10 row x 3 column …  |
| | I have a class that looks like this [CODE] //the mem_data class======================================// class mem_data { public: mem_data(int,int,std::string); ~mem_data(); private: std::vector<reader> mem_store; int complete; friend class model_base; }; [/CODE] Now, I would like to let the class model_base access mem_store My main code will contain the following: [CODE] mem_data test_data(20110601,10,"test_file.csv"); model_base … |
| | this is my project its hard who can write it for me please Write a C++ program to read, save, sort, search and display the students’ ids, student names and marks of N students.fficeffice" />>> N=7 should be declared as a constant in your program. You must use arrays to … |
| | Please tell me how bad this code segment is. I figured I would share this horrible code. If it's not as horrible as I think it is, please let me know. Thanks! [CODE] /* Purpose: Create a function to check the input from user. Only valid integer should be returned. … |
| | Hi. I'm trying to make a simple question program, my first question doesn't work (if you enter the wrong answer/an answer that isn't an integer, you get stuck in an infinite loop). However, my second question works fine even though the code is quite similar. Sorry if I'm being a … |
| | Hey I am a real amateur and I am trying to teach myself and I have been following the tutorials at [url]http://www.youtube.com/watch?v=VJGqalveGmM[/url] and I am just not able to get it to work, any help would be greatly appreciated. This is the error I am getting, I have been doing …  |
| | Hi, I am having an issue with OpenCV version 2.1, 2.0 on windows VS2008. I am attempting to open an uncompressed .avi video to grab frames from it. The VideoCapture class works to capture from an attached camera, and it compiles, making me think it is not a location/missing file … |
| | please help me with this.. (this s the function)- i don't know how to construct a code to test if array integer is empty using bool..pls help me.. (this s the function)- pls also include the main.. thanks bool isArrayIntEmpty(int *numbers) |
| | I have a custom date class that is constructed in the following way: [CODE] date date_file("dates.txt"); [/CODE] I want to put this object into a new class as a private member, e.g [CODE] //the mem_data class======================================// class mem_data { public: mem_data(int,int,std::string); ~mem_data(); private: std::vector<reader> mem_store; int complete; date date_file; }; …  |
| | Hello guys! :) I have problem finding out, about why the author if the code i have. Uses array like this: [CODE]int past[1000][2]; and says that 0 is side, and 1 is up.[/CODE] Does he mean that: [CODE]past[pastCounter][0]; is for up,and down (x) past[pastCounter][1]; is for sides (y)[/CODE] Appreciate all … |
| | Hey Guys! Below is my code of Battleship game. I keep getting "Process terminated due to StackOverflowException." error. It keeps pointing to [CODE] char[,] Grid = new char[10, 10]; [/CODE] and i have no idea what it's asking to fix. Please help me. Thanks! [CODE] using System; using System.Collections.Generic; using … |
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