51,593 Topics
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| | Implement a class Person with two fields name and age, and a class Car with three fields: (1). the model, (2). a pointer to the owner (aPerson*), (3). a pointer to the driver (also a Person) Write a program that prompts the user to specify people and cars. Store them …  |
 | I was wondering if I partially specialize a class (which I'm understanding to mean hardcode some of the template parameters?) if I have to implement all functions or if I can just implement some functions. I put together a demo: [url]http://programmingexamples.net/index.php?title=CPP/Templates/PartialClassSpecialization[/url] Where in the main class definition there are two … |
| | So I need this to print when vowel you entered instead of just telling you that you wrote a vowel. I'm straight up not sure how your suppose to do that! I went ahead and wrote the code for inputting vowels not sure whats next. [CODE] #include <iostream> using namespace …  |
| | Hi, I need suggestions on how to count the words, letters, characters on a file . I created a program of it however, when i use the "seekp(0L,ios::beg);", it doesn't go to the beginning. I want to just close and re-open the file but I think there is a better … |
| | Well I'm working with structures and need some help with a program. Now if the user chooses to deposit more, I need it to add to the last amount entered... But I'm not sure how to go about doing so. [CODE]#include <iostream> using namespace std; struct the { int num; … |
| | I've been scouring the internet and my textbooks and haven't found any good explanations about how to incorporate hexadecimal numbers into my C++ code. I am currently working on a program that acts as a simulated computer environment to run a simulated machine language in the console a maximum of … |
| | I have a double value that I need the user to input. How can I make the program catch a letter (char/string) value if they enter it?  |
| | I am just learning c++ and, I am trying to create a function out of the lines that are surrounded by stars. I am at my wits end! Does anyone have a suggestion or reference that might help me figure this out. Here is my code: [CODE]int a, b, c, … |
| | Hello, I have a segmented region in an image, it is not rectilinear. Just a random shape without right angles , much like a circule. I want to calculate the mean on that shape. so I can plot the mean as a starting poiny for drawing a vector. I have …  |
| | This program is supposed to simply take user input and output it in the right format. It keeps giving me an error message. I cant figure out what is wrong and would appreciate some help. [CODE]#include <iostream> #include <iomanip> using namespace std; int main() { string date[9], dollars[3], cents[3], first_name[20], … |
 | Hi, I'm having trouble getting my summation function to work using recursion. I am reading in a set of 10 numbers from a file into an array, then printing the array out using recursion, then I have to take the summation of 1-last number in the array (Ex 1-14). The … |
 | Is it possible to overload an operator for a built-in type? And if so what is it's syntax? EG: [CODE]//Use of overloaded operator^ for types double and double (assuming it is overloaded for exponent): double a=10.0; double b=2.5; double pow=a^b;//pow is approximately 316.22....[/CODE]  |
| | HI. I made a program for my homework it doesnt fulfill the task completely but i think it's gonna do the job.What do you say will it do the job or not ???? Heres the task:Write a program square that calculates the squares of all numbers that are contained in …  |
| | Hello, This is an extension of this thread: [url]http://www.daniweb.com/software-development/c/threads/357681/1525001#post1525001[/url] My purpose is to create a class that handles a network message. Irrelevant, anyway. CMyMessage: [code=C] #include "stdafx.h" #pragma once #include <conio.h> #include <stdio.h> #include <iostream> #pragma once using namespace std; typedef unsigned char byte; class CMyMessage { protected: byte type; … |
| | What do you think is the best, I've heard that wxwidgets isn't really the best one? Give ideas please, thanks in advance!  |
| | Hi, I am new to C++ and trying to use map in C++. I have a sample program as shown below- #include <iostream> #include <map> using namespace std; int main() { map<char*, char*> m; int i; char name[64]; char val[64]; // put pairs into map for(i=0; i<26; i++) { sprintf(name, … |
| | Hello, im trying to make a program that reads from a file and sums up only the numbers.the numbers ar aranged like this in the file: 100er34 67 yyy 7 5 63 6 1 My problem is that the program sums up wrong,it sums some numbers twice when it see …  |
| | I am just learning c++ and, I am trying to create a function out of the lines that are surrounded by stars. I am at my wits end! Does anyone have a suggestion or reference that might help me figure this out. Here is my code: [CODE]int a, b, c, … |
| | Hi, I'm trying to find the resultant of a given data using fstream. I made the program and everything and I believe its all correct however, when I try to run it, I'm getting a linker error saying "undefined reference to Resultant(const double...)" which I can't figure out how to … |
 | I just started looking at iterators in my C++ class and don't think I fully understand enough about them to actually create one. I need to add an iterator to this doubly linked list program: [CODE]#ifndef CSLIST_H #define CSLIST_H #include <iostream> #include <cstdlib> using namespace std; template <class T> struct … |
| | Edit : Broken from this thread. [url]http://www.daniweb.com/software-development/cpp/threads/35587/175186#post175186[/url] Hello. I got the same problem. But i need to read the string table from a file. I must use a 3d table? The table in the file must look like this: [CODE] A B C D E A QX FN LB YE … |
| | Code snippet for removing duplicates in a text file using vectors in c++ |
| | If a is greater than b then if a is greater than 300 multiply a by 7. Otherwise— in case a is not greater than b—multiply a by 10. Use only two if and one else. Make sure your else is paired with the correct if. You may have to … |
| | Hello all. After going through a deep search on these forums and google as a whole, I have not been able to find a correct piece of advice or input on how I should aproach Guassian Elimination in C++. Ive been assigned to make a program that can perform Guassian … |
| | So basically, as of now I have a word and numbers that i am trying to space out for output (the code is in a text file) it's like "HEY10001101" when it's supposed to look like "HEY 10001101". i have the "HEY" stored as an "string command" and the number … |
 | I'm trying to make a small text-game that revolves around armies. I have a unit class [CODE] class Unit { protected: string m_name; short m_health; unsigned short m_damage, m_block, m_experience; public: Unit() { } }; [/CODE] This was a rough outline - I'd later add methods that I'd want the … |
| | i have a header file which contains a random number generator here is the code: [CODE]#include <cstdlib> #include <time.h> #ifndef RANDOM_H struct rand_var{ int x,y; }Rand_var; static int rand_gen() { srand ((unsigned)time(NULL)); extern int random; random = rand() % (Rand_var.x-Rand_var.y+1) + Rand_var.x; } #endif /* random.h */[/CODE] you will probably … |
| | Hello there people, I hope you can help me with this one. I'm having a very serious problem when using the Top() method of a stack, difined like this: [CODE]template<class T> T Stack<T>::Top() const {// Return top element. if (IsEmpty()) throw OutOfBounds(); // Top fails else return stack[top]; }[/CODE] and … |
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| | I am spliting my soft real-time application into two processes, one is the gui and the other is the hardware communications. I would like to to have both processes monitor each other as they send data back and forth. When one detects that the other has crashed it will launch … |
| | I am currently attempting to teach myself C++ so I don't have the benefit of a prof or TA. The question at the end of the chapter that I'm working on wants me to create an array of structures and to initialize the array of structures using the new function. … |
| | Today I was taught about virtual methods but got lost somewhere in the pointers. Here is an example [CODE] class Person { protected: string name; public: virtual string get_name() { return name; } }; class TFaculty:public Person { private: string title; public: virtual string get_name() { return title + " … |
| | Hi! I am trying to make a program, where it opens a text file. If it reads, for instance the "UP and the 2 #s after" in the file, it will print, on the same line (with the data) a result of another #. for instance: (command, code, and code2 … |
 | I was just wondering if ya'll knew of any dictionary libraries that I could include in one of my c++ projects. A quick google & forum search have offered solutions in other languages, such as python and c# but have seen nothing specific for c++. Thanks in advance. -d.w.  |
| | Here are my error messages: [INDENT]! "printStock(int, int)", referenced from: _main in main.o _main in main.o ! "Sales(int, int, double)", referenced from: _main in main.o Symbol(s) not found[/INDENT] Here is my code: [CODE]#include <iostream> #include <cmath> #include <iomanip> #include <fstream> using namespace std; void printStock(int,int); double Sales(int,int,double); int main () … |
| | Below is my home work problem. I don't want the answer, I am just looking for an example of how I can count the occurance of each number in the array numbers and assign that value to the count array. Thanks for your help!!!!!! *---------------------------------------… * Sample Output: *** start … |
| | [IMG]http://i1187.photobucket.com/albums/z394/crazythang/photo-1.jpg[/IMG] i try to compile a simple c++ hello world, and i get this, PLZ HELP i compile with g++...  |
| | [ICODE]please forward the function to calculate the smallest and largest without using (if,while else) statements Input three different integers: 13 27 14 Sum Average Product Smallest Largest 54 18 4914 13 #include<iostream> using namespace std; int main() { int x,y,z; cin>>x>>y>>z; cout<<"the sum is ="<<x+y+z<<endl; cout<<" average is ="<<(x+y+z)/3<<endl; cout<<" … |
| | I am working on a VideoServer for my company, and in making the cgi files for the Web interface, I came across the following error: " invalid conversion from ‘int’ to ‘VideoOutputMode‘ " This was from line 4 of the below code, in the WebInterface file: [CODE]form_iterator vout_mode = formData.getElement("DisplaySettingsVOutMode"); … |
| | Trying to convert from binary to hex but for some reason it keeps bringing up the error instead of the output [CODE] #include<iostream> #include<string> #include<cmath> using namespace std; void BintoHex (int[]); bool CheckBin (int[], bool); void Hexadecimal (int[]); string hexadecimal; void main() { int bin[4]; int binary; bool reentry = … |
| | Hello :) I'm creating a license plate recognition system for my coursework at University. We need to use Binary trees, which I've done but the information needs to be stored in a file to read and write to. I've created some text files with XML tags in for Cars, Lorries, … |
 | I found this code on the internet which is an good keylogger only issue it always types capitals how to make the keylogger recognise if its capital or not? ///////////////////////////////////////////////////////////////////////////////////////// [CODE]#include <iostream> using namespace std; #include <windows.h> #include <winuser.h> int Save (int key_stroke, char *file); void Stealth(); int main() { … |
| | Hi, I am writing a program to solve the 8puzzle, but for some reason i am having more difficulty with the structure than the algorithm.... I have two classes, a tree and node class. My main problem is to put the nodes in an array in the tree class. Second, … |
| | Hello :) I'm having a couple of errors that i just can't get my head around so please help! [U]Error 1[/U] [B]warning C4018: '<' : signed/unsigned mismatch[/B] [CODE] for (int i=0; i<numVehicles; ++i) [/CODE] [U]Error 2[/U] [B]error LNK2019: unresolved external symbol _main referenced in function "int __cdecl console_main(int,char * * … |
| | I am currently working on a program that takes one measurement of a circle and then gives the rest although i came across a problem while trying to make it loop back if you input an invalid number and my compiler keeps saying i have an error with were my … |
 | For some reason my resource file isn't getting compiled when I compile in VC++ 2010 express. Even when I make changes to the .rc file. This is the contents of it: [code=c++] #include <windows.h> #include <commctrl.h> #include "resource.h" LANGUAGE LANG_ENGLISH, SUBLANG_ENGLISH_US IDD_ASSERT DIALOGEX 150, 100, 180, 180 STYLE DS_MODALFRAME | … |
| | [CODE]#include<stdio.h> #include<iostream> #include<string> #include<conio.h> #include<fstream> using namespace std; class TESTnonteaching { private: string oname; string osir_name; int oid; public: int count3; void TESTadd(); void TESTsearching(); //void editing(); void TESTdisplay3(); void TESTsetcount3() { count3=0 ; } }; //ADDING STAFF// void TESTnonteaching::TESTadd() { if(count3>=3) {cout<<"NO SPACE LEFT"; return; } cout<<"ENTER YOUR NAME … |
| | Howzit, I need some advice on how to go about doing this little side project. Theres a website that uses xml feeds to populate the whole page (i dont care if thats good or bad), I can access these feeds when I'm logged in, but as soon as I'm logged … |
| | I want to use hash_map with struct values. The code is the following: [CODE]#include<stdio.h> #include<string.h> #include<hash_map> using namespace std; using namespace __gnu_cxx; struct row { int number; char type; }; struct eqstr { bool operator()(const char* s1, const char* s2) const { return (strcmp(s1,s2)); } }; int main() { hash_map<const … |
| | [CODE] /*i want to overloaded operator in my program. but i dnt know how to add overloaded + operator in this prgram. plzzzzzzzzz help me to solve this problem*/ #include<iostream.h> class rational{ private : int numerator, dnomenator ; void reduction(); public : rational () //default contructer { numerator=dnomenator=1; } rational … |
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