51,593 Topics
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| | I remember doing a class to handle rational numbers in one of my classes way back when. I decided to do it again. What I'm having trouble understanding right now is why do I even create a class when my overloaded functions are all friend functions? As I understand it, … |
| | I am currently working on a project for class that reads in from a .txt file the names of a film, the year it was made, and the list of actors in said film, and sorts the info in a binary search tree. In the tree nodes, I have the … |
 | /* the thing is that i need to check if a given number (n) is a palindrome. i also used limits.h to identify if the number is is exceeding the limit. i came up with this beut it's no good. any ideas? */ #include <iostream> #include <stdlib.h> #include <limits.h> #include …  |
| | Hello all, So here is my problem: I have 2 functions that one uses the other's calculations and result: int functionA(int a, int b) { int x = a+b; return x; } int functionB(int a, int b, int c) { int xx = x(a,b); int f = xx * c; …  |
| | I need to read a text file, parse file, and check occurence of words without leading or trailing punctuations. this is what i have so far, std::ifstream f("textfile.txt"); std::istream_iterator<std::string> eof; std::multiset<std::string> words( std::istream_iterator<std::string>(f) , eof); for( std::multiset<std::string>::iterator i = words.begin(); i!=words.end(); i = words.upper_bound(*i) ) std::cout << *i<< ": " … |
| | Hello, I wanted to ask. If I define `typedef float mymat3[3];` and then I have a function: void myfunc(float *One_mat_, .... and inside function I do: mymat3 * One_mat=(mymat3 *)One_mat_; while(i<numPoints) { One_mat[i][0] = (One_mat_[++c1]); Does this mean , that I am copying One_mat_ (which I am casting it as … |
| | I can't figure out how to add a loop to allow the user only three attempts to enter in a valid password. Any hlp would be appreciated it . #include <iostream> // cin and cout #include <cstring> // for string #include <conio.h> // for getch #include <cctype> // conversion using …  |
| | Hello I want to solve it randomly reads the lines. I found a source code, but it will crash the program. This is source code: DWORD cFindEvent::GetRandomPosition() { //--------------------------------------------------------------------------------------- FILE * garew = fopen (MobCoords,"r"); //--------------------------------------------------------------------------------------- char temp[1024]; int i = 0; int j = 0; int licz = rand() … |
| | My code is not reading my data file well. The code is supposed to read fractions from decending order, but it does not work half way through. please help! #include <iostream> #include <fstream> using namespace std; void read_data(int nums[],int den[],int size); void clean(int Cnum[],int nums[],int den[],int Cden[],int size); void low(int … |
 | i wanna ahelp please hospital project i have made aclass room composed of 4(class bed) i wana to initalization all rooms ids and all beds id once time not every time i run the programmme example room 1 ---->bed1,bed2,bed3 // bed class <<--- class bed{ int id; bool empty; public: … |
 | //write void write() { setlocale(LC_ALL, "en_US.UTF-8"); cout <<""; } template <typename A, typename ...B> void write(string argHead, B... argTail) { setlocale(LC_ALL, "en_US.UTF-8"); if (blnBlink==true) { CONSOLE_SCREEN_BUFFER_INFO csbi; GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &csbi); string a; a=argHead; TextBlink(a, csbi.dwCursorPosition.X, csbi.dwCursorPosition.Y,csbi.wAttributes); COORD Position; Position.X=csbi.dwCursorPosition.X+strlen(a.c_str()); Position.Y=csbi.dwCursorPosition.Y; SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE),Position); } else cout << argHead; write(argTail...); } template <typename A, … |
| | am doing my project phase 1 its about hospital : i have made a person class--patient inherite from it i wanna afunction to----add,alter,delete patient---------------- in text file the output 1--> add patient 2-->alter patient data 3-->delete a patient class person{ int id; string fname; string lname; string gender; int age; … |
 | As a lecturer, you are required to prepare an analysis of your student performance based on their marks. Therefore, you have to develop a software system that capable of doing so by evaluating their marks. The computer system that you will be developed must able to find the minimum, maximum … |
| | Plz help me tell me how we can convert the C program in C++ I working on OCX(Active X controls) plzzzzzzzzzzz...............reply |
| | Here is the website for the assignment: http://www.docdroid.net/6ap6/inheritance5.pdf.html Note: The ones highlighted in blue are the ones I completed, and the ones highlighted in yellow are the ones I need help with. Here is the website for the first header file (point.h): http://ideone.com/6bAeqv Here is the website for the first … |
 | please give me the example for developing game in c# |
 | Hello, I am working on an event driven library and am having one minor problem. Basically I have two ways to get what I want done. Method 1: Smart pointers and factory functions #include <iostream> #include <vector> #include <memory> using namespace std; class Object { public: virtual int getInt(){return 0;} … |
 | When would you open and close files within a function instead of in the main program? ________________________________________  |
| | so im trying to write a website in c++ using the treefrog framework. it all went fine following this tutorial http://www.treefrogframework.org/documents/tutorial and i got the page up, but i cant figure out what files i need to edit to actually edit the webpage itself. can anyone help? |
| | write a function named, smallestValue, that accepts five integers and return the smallest integer accepted.( just write a function)  |
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| | Hello, Is there any utility which can generate sequence diagram from existing C++ source code? Thanx in advanced. Amitendra Mukherjee |
 | A palindrome is a word or sentence that reads the same forward as it does backward. Write C++ code that read string consist of 6 characters only and check if the string palindrome word or NOT. |
| | please help i would like to Write a program that inputs three integers from the keyboard and prints the sum, average, product, smallest and largest of these numbers. |
| | This is the problem: Write a class EncryptableString that is derived from the STL string class. The Encryptable string class adds a member function void encrypt( ) that encrypts the string contained in the object by replacing each letter with its successor in the ASCII ordering. For example, the string … |
| | What is the best way to read a text file and print to console, then grab that string and convert string to a const char? |
| | Instead of entering text to console, I want to use the text from a text file and use this function and method to do a concordance count of words and how many times they appear in the text file. check line 137 #include "stdafx.h" #include<stdio.h> #include<stdlib.h> #include<string.h> #include<conio.h> #include<ctype.h> #include … |
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| | I have been working on this code (school assignment) for a few days now. It seems to be almost finished, but I am not sure what's going on. When I run it in an online complier, it displays correctly, which is supposed to look something like this "12345" "1234500000" However, …  |
 | #ifndef BASE_H #define BASE_H class Base { public: int m_nValue; Base(int nValue=0) : m_nValue(nValue) { std::cout << "Base" << std::endl; } }; #endif #ifndef DERIVED_H #define DERIVED_H #include "Base.h" class Derived: public Base { public: double m_dValue; Derived(double dValue=0.0) : m_dValue(dValue) { std::cout << "derived se" << std::endl; } friend …  |
| | the function is a std::function<void(string a) write; ok.... it's void.... but why the error about it??? what means these error? |
| | i understand that the macro is a code that is changed before compile it. so i did these macro with these code: #define (events2((y),(x))) (class events3 : public ( y ) { events3(); ~events3(); }(x) ; ) //#define (events2((y),(x))) (class events3 : public ( y ) { events3(); }(x) ; … |
| | Write a program that accepts two integers from the user, if any of the integers follow the other, print “ a follow b” otherwise print “***”. |
| | I have my codes working where I got separate date and time columns. I would like to add one more column which have both date and time in. For the existing codes this how I did sprintf(all,'%02d:%02d:%02d.%06u%03u',CURDATE(),s / 3600, (s % 3600) / 60, s % 60, usec, nsec) I … |
| | How can I create an array of pointer using **P and point it to NULL? Let's say I have coded as below . struct s { float a ; char x ; } ; s **p ; p = new ( s * [10] ) ; Now I want to … |
 | You have to implement a file system that should have the following specifications. On the execution of your code your console should display the following options to the user. 1. Create a new file. 2. List & view existing files. 3. Copy file from windows (*.txt). 4. Copy file to …  |
| | My application requires a dialog box and a parent window, from the window proc of the parent window I'm trying to draw on the dialog box. How might I do this? Thank you for reading :) |
 | The title of this is slightly misleading but its also specific to what I'm asking. I've got a project which uses Ogre and CEGUI. I'm only trying to get CEGUI up and running. I don't know that much about compilers and IDE's but I can program and I also read … |
| | Hi , I need to implement efficient search algoritham for comma separated list of MSISDN's that needs to be loaded in memory (left side of '|') character. Followed by the comma separated series of MSISDN's that needs to be searched in the above huge list(millions)(right side of '|' character). Example: … |
| | I have to create a program that uses a class Pstring derived from the STL class. The only error I am getting says that I have one unresolved external. How do I fix this? Here is my code: #include <string> class Pstring : public std::string { public: Pstring(const std::string &text) … |
| | This is the assignment: Assuming that a year has 365 days, write a class named DayOfYear that takes an integer representing a day of the year and translates it to a string consisting of the month followed by day of the month. For example, Day 2 would be January 2 … |
| | see these class: class test { public: void Created(){}; test() { Created(); } }; now we can create objects from it. ok. but can i overloading the scope-resolution ('::') for the object accept and change the Created() function? |
| | Am having problems converting from if-else statements to switch statements and vice-versa  |
| | Hi group, I am searching for a complete word list A thru Z. No definitations, parts of speech, or origins of the words. Just a comprehensive, unabrigded listing. Any suggestions? |
 | I'm having trouble with this bit of code that I'm working on. I get an error code in my `parseit()`method that says, "not all code paths return a value". Ideally I'm trying to call my method and parse my variables from my textbox to return true when they're valid, then … |
| | hello, I am having problem with selection sort, I am trying to sort the students name alphabetically.I compile it and it shows me whole bunch of errors in VS. I dont think it has do to do with my display all students function, I think it has more to do … |
| | Here is a function to print my binary search node tree, void printtree(struct node *tree) { if (tree!=NULL) { printtree(tree->left); printf("%s %d\n",tree->word, tree->lineNumber); printtree(tree->right); } } How would I save what I print to a text file???????  |
| | Unhandled exception at 0x561330d9 (msvcr100d.dll) in main.exe: 0xC0000005: Access violation reading location 0x440b4bd8. i try my best to debug it, but don't have clue on it. **fft.h** #include <math.h> #include <stdio.h> #include <stddef.h> #include <stdlib.h> #define NR_END 1 #define FREE_ARG char* #define M_PI 3.14159265358979323846264338327 static double sqrarg; #define SQR(a) ((sqrarg=(a)) … |
| | Hello, I am having a particularly nasty case of "What is the syntax?" while working on an event driven library. Basically this is what I want: class Object {// private: public: virtual bool onEvent(Event e)=0;//all objects have to react to events Object operator|(const Object &o) { // I want to … |
| | I've been trying to fix a problem with getline() and cin.getline().Here's a example I've made and it still has the problem: [TEX]" No matching function to 'getline(std::istream&, char[100])' "[/TEX] Here's the code: [CODE] #include <iostream> #include <windows.h> #include <string> using namespace std; int main() { char name[100]; cout << "\nEnter … |
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