51,593 Topics
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| | Hello, I wrote a program which takes CNF-files as input. It takes from 1 sec up to 1 hour to finish its task (Checking satisfiability). However, there is one CNF file which takes about 1 hours before it spurts out the message: aborted <core dumped> ... and creates an *.exe.stackdump …  |
 | before i ask this question i want you to keep in mind that i am asking it in general, and i also want a general answer :) i am making a 3d first person shooter and i want to know how i would go about getting a gun infront of … |
 | There was another thread about this ([url]http://www.daniweb.com/forums/thread114737.html[/url]) but it didn't seem to be resolved? If I have a vector of int's and another vector of the same length of corresponding names, I would like to sort the ints and have the names "follow" [code] vector<string> Doubles; Doubles.push_back("Name1"); Doubles.push_back("Name2"); Doubles.push_back("Name3"); vector<int> … |
| | Can anyone help me with this program?? Professor asked me to create a program that permits a user to enter a maximum of 50 characters into a stack Object, then have the program sort the stack contents into increasing order from A to Z. Is there any way i can … |
| | Hi, Can anyone pls let me know the reason as to why do STL - [B]Container Adaptors[/B] types do not support the use of [U]iterators[/U] for iterating through their elements? Thanx |
| | [CODE] ifstream inputfile; cout << "enter the name of the file: "; cin >> filename; inputfile.open(filename); string temp; int i = 0; while(filename != NULL) { while(isalpha(filename)) { temp[i++] = filename; } if(i > 0) { insert(temp, 1); i = 0; } } [/CODE] this is my code, what am … |
 | I have an assignment question that says "Decide whether the [I]syntax[/I] of the following statements is valid or invalid." These are the statements: [code=c++] a) listData->next = ptr1->next ; b) listData->next = *(ptr2->next) ; c) *listData = ptr2 ; d) ptr2 = ptr1->next->info ; e) ptr1->info = ptr2->info ; f) … |
| | Hi all, The program I'm making needs to basically interpret long math operations (see the attached text file) and compute them. Simple right? I have to use stacks and queues to reorder the operation into the desired output (the output will compile properly if you run the program as it … |
| | I did a program to read the output of the UNIX command ls -ali and count the number of directories, write files, link files etc. But there seeems to be something wrong with my code and I cant compile it. I cant seem to find out whats wrong with it. …  |
| | Hi, I'm making a program that will get input from a user's microphone, send it to another user with a socket, and play it. It's like a VoIP thing. I can send data using a socket, but I have no idea how to get input from a microphone or play … |
| | I have a problem in the book (not for homework) that says. List Reverse Modify the linked list class you created in the previous programming challenges by adding a member function named reverse that rearranges the nodes in the list so that their order is reversed. Demonstrate the function in … |
| | Hi. I've been trying to find out how to use Gui in C++. I use Bloodshed Dev.-C++ and so far I haven't found anything on how to do it. Could someone please help? |
| | hey, given one side and an angle how do you calculate the other sides and angles in a right angle triangle in c++. I'm basically looking for an algorithm. Thanks drjay |
| | Hi! I wrote this program to generate a keyboard determined random numbers. [code] #include <stdio.h> #include <stdlib.h> #include <time.h> int amount, aleatory_numbers; int array[70]; int counter=0; int generator () { printf ("Introduce the amount of numbers that you wish: "); scanf ("%d", &amount); srand ( time(NULL) ); do { aleatory_numbers … |
 | I'm trying to use new but I can't seem to get it right... in this example I ask how many strings the user would want to input, then ask for each one, then echo them back. [code=c++] #include<iostream> using namespace std; int main(int argc, char** argv){ int num, i; char** … |
| | My program needs to use exponents, however, double does not allot enough space for my numbers, is there another way to use the pow(x,y) function or is there another function for exponents that I'm overlooking? [CODE=cplusplus] #include <iostream> #include <cmath> using namespace std; int main(void) { int thresh = 10000; … |
| | I'm trying to write a class that will read and organize the command line arguments of a program. Like, it will read -a as a 'switch', and --abcd as a 'switch' and you can define different switches as having parameters, so -a bc de fg will have bc and de … |
| | Why we use main() function in c and c++? please reaply as soon as possible.  |
| | I'm trying to read a single letter from the beinging of a string that is generated from user input. Though it sounds childishly easy, I think I may seriously have a heart attack from trying to solve this problem. Example code follows: [code=CPP] #include <iostream> #include <string> #include <sstream> #include …  |
 | hi guys..! i need some help on how can i print out the output of my program.. the problem is, it will only print out the first char of a characters and i don't know how to use the pointer using an multidimensional array. ex. input: jhonny output: j here's … |
| | Hello everyone I am new to the forum I have a question. I created a method foo(ifstream &myfile) and works only if executed ones. In a loop or consequtively calls make the cerr call [code]int foo( ifstream &infile){ if (!infile) { cerr << "Unable to open file "; return -2; …  |
 | Hello I wanna ask is it possible to to us vb for building a program's GUI and c++ for its coding? |
| | For a class project we are to implement four types of sorts that they give us, and for the most part i have that working, but i wanted to know what would be a good data structure to use? Atm im just making an array, if it fills up, i … |
| | Hi All, I am working on a project and have come across a slight problem. I have a file i am reading in that consists of the following: John Smith 333222333 01/01/80 M z11119 cs111 2008 fall a cs222 2009 spring f The first line is the Students information, the … |
| | Hi am trying to make a simple application that write and read from and to a text file the problem is that i want to be able to aerch in the text file for an specific line. the text file is a list of words with a meaning each word, …  |
 | This is homework and I am using a getfile that is just a 5 row 4 column list of numbers. I can get this program to compile and when I go to run it, I get my cout text output but without my numbers and the program crashes. I am … |
| | Hello, I'm relatively new to c++, so I would appreciate any help. This must be a very basic issue, but how is it that one can assign a stuct or class member to a pointer instead of that structs or class member's address (via &)? (from stroustrup) [code] struct name{ … |
| | Hi all. I have just started using Qt, and i can't find any primer on how to connect my Sql Server2008 database. What are the steps that i need to make, so my database is connected with Qt. Additional info: I'm using Qt 4.4.3 open source on Windows XP and … |
 | Hello, I'm trying to implement a system of resource managers. There's a ResourceManager template and its templated member function which will attempt to create a resource from whatever _Creator had been passed (if the given resource can use the given creator class). The _Creator is just an aggregation of information … |
| | I have a code snippet that strangely works one way on a fedora 6 machine and another way on a fedora 8 machine. [code] void Form1::SendToApp() { vector<int> isciistream; vector<int> fontstream; cout<<"Entering Form1::SendToApp()"<<endl; isciistream=wwnd->OnOK(); isciistream.push_back(32); char str[255]=""; cout<<"Size of IsciiStream:"<<isciistream.size()<<endl; for (int i=0;i<(int)isciistream.size();i++) { sprintf(str,"%s%c",str,isciistream[i]); cout << "isciistream[i] :" << … |
| | Hi Everybody, I am new to C++,but strongly it is recommended to learn C++ for its speed. That is why I'm here.Could you help me about it. Where do I should start from,read which book and etc. Thanks in advance.  |
| | Hello everyone, I'm a moderately experienced C++ programmer who has decided its finally time to learn socket programming. I want to learn by writing a simple client/server pair of apps. The client will send a simple text string across the network to the server. So far, I've only worked on … |
| | I have implemented ReadFile function for reading data through SerialPort.When the other end is responding correctely my program is working fine. Sometimes when I dont get data from the other end my program hangs.For this I have implemented timeouts for Readfile function. But It doesnt seem to be working. My … |
 | I have a problem with my program and it has to do with my finding average function. The program goes like this: The program will grade a series of exams and then print a grade report for students in a course. Input: An instructor has a class of students each … |
| | I'm having a lot of problems writing a program to open a file listing the grades of 4 students, all listed next to their names, and outputting an appended version of the file with the average of the scores next to the numbers on each line. it goes something like … |
| | Hello, I'm having a great deal of trouble stemming from a part in my code where I have to convert an integer into a string so that I can concatenate it - the problem being that a variable is refusing to clear or re-write itself, instead it just appends the … |
| | I have seen functions defined these two ways: function(type *variablename) function(type variablename&) I commonly use the first one to pass on pointers to my structs, but is the second one the same as the first? |
| | This is my code... [CODE] #include <iostream> #include <fstream> #include <vector> using namespace std; bool searchVect(vector<int>, int); int main() { bool answer; int value; vector<int> vect = {13579, 26791, 26792, 33445, 55555, 62483, 77777, 79422, 85647, 93121}; cout << "Enter the number to determine if there is a winner. \n"; … |
| | Hello friends, Need help in generating a random number from an array.Once a number is generated, the number has to be deleted from the array so that only the remaining numbers can be generated from the array.And it should go on until all the numbers from the array are deleted. … |
 | Im learning ++ by myself and have decided to follow this tutorial and very interesting [url]http://www.cprogramming.com/tutorial/lesson4.html[/url] However as you can see the int mult ( int x, int y ); is defined twice: at the top and the bottom. Whay it is that. Also I have found many programs uses … |
| | when i try the code below : [CODE]#include <iostream> using namespace std; int a = 3; int b = 4; int c = 5; int * pA = &a; int * pB = &b; int * pC = &c; int * abc[] = {pA,pB,pC}; int main() { cout << abc[*pA] …  |
| | Hi...this is the code that I wrote to find a particular string from a 2-d array of characters. It prints F(for found) and N(for Not found). When I execute this program, it prints N only. [code]#include<iostream.h> #include<conio.h> char SearchString(char[5][10],char[10]); void main() { clrscr(); char str1[5][10],str2[10]; int i; cout<<"\nEnter 5 objects:-"; … |
 | [code] // gettingEvenNumbers.cpp // Purpose of this functions is to read in the numbers 1 - 20 // and print out only the even numbers using a loop of some kind. #include <iostream> #include <string> int main() { // Numbers being used. int x[] = {1, 2, 3, 4, 5, … |
| | I would like to learn C++, Everytime I write the code or should I say copy the code down, I get to where I want to compile but cannot get the program started. Can any one help by explaining how after I copy the code the steps from then on. … |
| | I am working on a programm that requires one to write a program that outputs your first and last intials in block letters. The block letters should be made up of small letters that match your block letter. If PS is the block letter then p should be made up … |
| | Hi to all I have a quick question. I am going to fill an array with some inpuit of type char using member function cin.getline. After I fill an array ,I would like to do "for" loop so I need to know what is curently the size of an array. …  |
| | hi, in the code below : [CODE]#include <iostream> using namespace std; struct deneme { int a; void (* myFunction)(int a); }; void function1(int a) { cout << a << endl; } void function2(int a) { cout << a + a << endl; } int main() { deneme myDeneme[] = {{1,function1},{2,function2}}; … |
| | I would like to have a singleton class along the lines of the Meyer's Singleton but which is private to a single thread. The singleton should automatically destroy itself when the thread dies. Any suggestions are appreciated! Harald |
| | Hi all, I am working on vs2005 (vc++8). I have created one dll in vs2005(vc++8), in that we have one function which returns "std::string" . when i load this dll in another vs2005(vc++8) application and call the function which returns "std::string", we get following error: Windows has triggered a breakpoint … |
| | i Wrote some basic code on something i saw here i while ago and was wondering what people could do with it. it uses a console and you can draw on the console or the entire desktop. i was hopping there was thing people could do to add or improve … |
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