51,593 Topics
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| | [CODE] #include <cstdlib> #include <iostream> #include <string> #include <math.h> #include "utils.h" #include <float.h> #include "onboostnn.h" //using namespace std; /* Constructor function. This sets the training example file and number of base models. It also sets to NULL other variables to be used later. */ onboostnn::onboostnn(datafile* examples_to_train, long new_num_base_models, int new_num_epochs, …  |
| | In RequestDeviceNotifications to detect USB Device, i am using FSD_MOUNT_GUID option to get two drives present on system namely: 1. \Disk (COMPACT FLASH TRAY) 2. \USBDisk(USB Device) both of them are removable drives i.e one is FLASH TRAY which contain (.bin files) for Window CE and other is USB Device. … |
| | I'm working on a password program for fun. If the password is correct launch something. If password is wrong prompt again. After 5 wrong guess don't allow the user to try and guess again, but allow them to get to the regular parts of the code. For example. If they … |
| | hi, i tried to create a program that takes in 8 inputs in an array, then grade the user and see if they passed or not (6 out of 8 or higher is a pass), but my program always tells me that i passed even if i get 0. other … |
| | hi everyone, i'm having trouble initializing a private int in a class and can't figure out what's wrong. it's especially confusing me because i do nothing different with my int called size from with my int called HeapSize, but size won't compile. the error i get is: "error: invalid use … |
| | HI, im trying to write a quiz program, i don't understand why is my first part is not right...help plz!! # include <iostream> # include <cmath> using namespace std; int main() { char answer[8] = {'A', 'C', 'D', 'B', 'A', 'B', 'A', 'B'}; char input[8]; int correct=0, incorrect=0, position=0; for … |
| | Just wondering if theres a function to get the window title of your browser. Like if you were to visit [url]www.myspace.com[/url] your window title would be: [url]www.myspace.com[/url] - Mozilla Firefox or w/e browser you happen to use. Is there a way to get the title of a window? |
 | I'm writing a C++ program to use a MySQL database (which means I'm limited to the <string.h> include file because of usages in the <mysql.h> include file). In one function, the user will enter a 9-character string that will be stored in an array (AcctNum[10], to allow for the terminating … |
 | Hello friends.. I am an amateur programmer in TURBO C++ .. It is a very old version v3.0 ... I am beginner.. I wrote a very simple programme to find the largest ans smallest element in an array . . The largest element finding process is working finely .. I … |
| | Hi, I am trying to read number from file. Following is my code. I am not able to read it correctly. When i>1 then i should read the second and third line of the file and store the values in the vector rows. But it is not reading the second …  |
| | I'm having trouble with a school project. This project runs on commands inputted though the terminal. The problem I'm having is that when I type in the commands: "+a +b +c +d" (insert a, b, c, d) the program breaks at inserting b... so somewhere in the insert command it … |
| | I am creating a program that involves a simple agent navigating a grid world to discover food. I am having trouble creating a unique class for the agent (which contains data members that represent its perception of the world - direction of the smell of the food, a visual 5x7 … |
| | Alright, I have a loop with a few nested loops inside like so: ........ for (int s=0; s<200; s++) { for (int i=0; i<N_plates; i++) { for (int j=0; j<3; j++) { V=V+(Cen[i][j])*(N[i][j]); } for (int j=0; j<3; j++) { ................ } } V=V/6; cout << "Volume:" << V << …  |
| | Hi, i want to read some lines to an output text file in a loop. My problem is, that i want to start clearing the text file and then append to it in a loop. At the moment i use: ofstream file; file.clear(); file.open("book.txt", ios::app); for (map<string,Person>::const_iterator it = adrbook.begin(); …  |
| | Yeah. This was what I was wondering. Because I am initializing arrays using the new function, I was wondering if there was any way that I could catch a force close (clicking the X or using end task) so I could delete [] the array. Or maybe the array is … |
| | [code=cplusplus] #include <iostream> using namespace std; int main() { const double WEEKS=5; const double TAXES=.14; const double CLOTHINGEXPENSES=.10; const double SUPPLIESEXPENSES=.01; const double SAVINGSBONDS=.25; const double PSAVINGSBONDS=.50; //Declaration Section double hours, rate, taxes, grosspay, netincome, clothingexpenses; double remainingbalance, savingsbonds, psavingsbonds, suppliesexpenses; double finaltotal; //Input Section cout<<fixed<<showpoint; cout.precision(2); //sets the 'double' … |
 | I’m actually going crazy. After spending a lot of time working on Decision making (if-else, switch and …), I really cannot figure out the basic difference between iteration and decision making. In some problems, the tutor asks us to use “While” loop and “break”, instead of “if-else” and it makes … |
| | So basically I am creating a client/server kind of program. The client/user enters a question eg "Who are you? " The server part receives this and checks it with a txt file and returns eg "I am a computer" or "Answer not found" So when i compile and run my …  |
 | Hi, I am using VC++6, MFC Application I am having the member variable - CArray < Coordinates, Coordinates & > mCoordinates. Coordinates is a structure, contains x, y, and z. When i return reference to this object, there is no problem. but When i assign to some reference i get … |
| | I had 2 assignment that were due tonight and I completed both of them in Visual Studio, but we're required to make sure they compile in linux before submitting them. I'm getting undefined reference errors when trying to compile Assignment3. Assignment2 consisted of marble.h and marble.cpp, runs fine. Assignment3 #included … |
| | hello, I want to read lines into an array (I will later work with the array of pointer , so that is why I use it) well this is my code that doesn't work correctly, does anybody now why? I created a simple txt document for this which has only … |
| | Hello Guys, I have a DLL created using Borland C++ 6, I need to use the same DLL with VC++ 2008, I have the .DLL and .LIB files created by Borland and the header file exporting 2 functions that I need to use in my program (Header file looks like …  |
| | ok, i'm somewhat of a noob to c++ programming and i'm completly lost in my class as of now, i mean i understand the concepts(somewhat) but actually writting my own code is really confusing me, i dont want anyone to give me the answer, but if someone could guide me …  |
 | [CODE]//Vars to know about Square* square; vector<Shape> shapes; [/CODE] I'm trying to add things that are shapes, or in this instance square (which inherits from shape), but whenever I call shapes.push_back(square), I get this error message: [CODE]draw.cpp:55: error: request for member ‘push_back’ in ‘shapes’, which is of non-class type ‘std::vector<Shape, … |
| | Hi, I have a class linestorage which has a static member S (represents lines of words of characters). The problem is I don't know how to access this member in a function. I am getting this error message Info :Linking C:\DOCUMENTS AND SETTINGS\DELL.DFHWHLB1\MY DOCUMENTS\SPRING 09\CSCI 250\HW\HW1\HW1_P2\kwic.exe Error: Error: Unresolved external … |
| | Can anyone tell how really these functions work???? 1.cin.ignore() 2.cin.clear() 3.cin.good() 4.cin.fail() 5.cin.bad() 6.cin.eof() I mean to say what values these functions return at what situation... thank you! I also need to know about some user input validation techniques.i.e. the user inputs valid data in the programs.....e.g.if there is some … |
| | Hi This whole pointer thing is getting the better of me. first i have a call to method "convertToCString" in my main: [CODE]int value = 21; char* cstr = NULL convertToCString(value, &cstr); printf("\"%s\"\n". &cstr); cstr = NULL delete cstr;[/CODE] the method looks like this [CODE]bool convertToCString(int& refConstInt, char** ptrtoCharPtr) { …  |
| | Hi Guys, i wrote a program that starts another thread. In one case i thought that i have introduced a memory leak and i should get a segmentation fault but i didn't !! That's kind of puzzled me so i decided to post it here. [code=c++] #include <iostream> #include <windows.h> … |
| | Hi, I am working on a project that involves a simple stimulus-response agent which much navigate it's way around a 2d grid world. Does anyone have any good ideas for ways to implement the agent's visual field? The input is a string of characters, one of them representing the position … |
| | Hi, I just started my C++ class a couple weeks ago and I am stuck and having a really diffcult time understanding which commands to use in my programs. I don't even know where to look to get a list. Anyways, basically what we have to make our program do … |
| | Ok, something very wrong is going on with my program. When i run it the numbers it is giving me are sometimes right but are also wrong. H (the first letter in the word) is both = to 0 and 1 (wtf?). Any ways below i'll show you want i … |
| | Hello all, I am trying to use the #if directive to compile extra functionality acording to some class template parameter defined integer constant. What I want to do is this: [code=cpp] struct A1{ static const int _AINT = 0; }; struct A2{ static const int _AINT = 1; }; template< …  |
| | I am trying to get a program working, and im half way there, I think. What the program must do is take input from the keyboard and then capitalize every first letter of every word. Here is my entire program so far... [code] #include <stdio.h> #include <iostream> using namespace std; … |
| | Hi i have a requirement where a cpp file should load a dll viz gzip.dll.then the cpp should call few methods in the dll.well im able to call the methods with no parameters but im unable to call the methods with parameters.if im trying to call methods with parameters i … |
| | Hi !!!! I want to write a program that print the character # like a triangle in the middle of the page.I mean like this : # # # # # # # # # # # # # # # # # # # # # # # # … |
| | // Sum of Squares and Cubes.cpp : Defines the entry point for the console application. // [code=cplusplus] #include "stdafx.h" #include <iostream> using namespace std; int _tmain(int argc, _TCHAR* argv[]) { int n,j; cout<<"Enter a Number:"; cin>>n; for(j=1;j<=n;j=j+1) cout<<j*j<< " "; cout<< endl; int a,b,c,sum; a=n+1; b=2*n+1; c=n*a*b; sum=c/6; cout<<"the sum … |
| | Is there a way for me to use an obj-C class with my C++ program? If so, what special parameters do I have to specify during the compilation phase, and if I needed, changes to my source code files?:-/ |
| | I have read prior post on the forum but I came up with few specific questions about Porting Unix Socket(hereby calling it BSD socket) to Win32 Platform : First of all, I am a native Linux C/C++ Programmer. I program in Ubuntu with GCC. But, I usually also port my … |
| | hey how to make an object move in an C graphics program, eg; i have drawn a swing and i want it to move... i am beginner in C graphics program so please help me...:( |
| | Hello, I looked around and saw similar problems, but None of the answers seemed to help my situation. Im almost done with my HW Just have come across this minor bump. The error is in the title, and is happening in my addressEntry header, or cpp. not sure: : error … |
| | Hi friends.. Last day at school my teacher gave the following code.. But it is not working.. 16 errors.. I am a beginner in C++ .I badly need your guidance a help in finding the errors... the for loops is all wrong.. To be frank I don't understand the working … |
| | [B]cannot convert parameter 1 from 'char' to 'char *'[/B] calcCharges(type_of_gas, &rate_of_gas, number_of_gallons, &total_gas_of_price, car_wash, &price_of_car_wash, &total_cost); |
| | Ok, stuck on homework. The program is supposed to read a list of presidents from a binary file and display them. I have it all working..except..when it gets to Truman...it just keeps repeating his information. I know its still going in the loop, but for some reason the pointer stays … |
| | hello, dear all. below is my program code. the problem is an half of my output is zero for entries of matrix for n greater than 4. [code=cplusplus] #include <stdio.h> #include <stdlib.h> #include <iostream> #define MAX 100 int num[MAX][MAX]; int n; int nrows = 0; using namespace std; void print(int … |
| | Hello, I am fairly new to C++ and am having a bit of trouble reading in a text file to my program which contains numbers(integers) and names(strings) and checking for spaces in the names(strings).I basically am reading in a .txt file which contains numbers and letters. In this file, the … |
| | When declaring get_color and get_size, my compiler gives me errors, and I don't know how to solve them. It's probably something really simple, but I think the more I try at it, the more messed up my code becomes (hence the 'this' and '->' references) marble.cpp(11) : error C2143: syntax …  |
| | Im writing my final project and i have everything in one .cpp file and i was wondering if someone could tell me in detail how to go about putting things in their own file and leaving the main function by itself in the main file. for example i have some … |
| | Ok so i made a decoder for this that gets the letters from the numbers that this encoder gets. Problem is that i think the numbers its giving me are wrong and i can't seem to figure out whats causing the problem. Help please! :( [CODE=C++]#define _CRT_RAND_S #include <iostream> #include … |
| | This is what I'm suppose to do: "Create a while loop to read in the corporate sales data from the pgm3.dat file and create a report listing data for each division as well as some of the summary data described in Programming Challenge 12 in the textbook. Inside the loop, … |
| | Hi [CODE]int** numberLists = new int*[count];[/CODE] I'm having difficulties understanding this line of code, I've just started programming in c++. I think I got the basics of pointers but I can't find any helpful "enough" info about arrays of pointers. I understand that an array of pointers to integers is …  |
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