51,593 Topics
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| | I am first semester student and studiyg CS. I need a c++ project atleast 1000 lines of code. but the project is too simple. I have studied yet Arrays..  |
| | Hi, As per below code snippet it is clear that in below class a if we don't introduce assignment operator despite of having pointer values it works fine as memory allocation is done explicitly by declaring s2 object on heap . can anybody suggest, if same canbe achieved without declaring …  |
 | Problem of sorting the ID in int main. anyone know how to fix the code ? ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ #include<iostream> #include<string> #define MAX 6 #define size 10 using namespace std; struct student { string name; int id; string prog; double cgpa; }; class stinfo { private: student data[size]; int last; public: stinfo(); … |
| | Okay so I have all of the coding and logic down except for ONE little part. I can not figure out how to actually implement my functions into the main because I keep getting errors that have to do with pointers. Please help! The point of the program is to … |
| | #For only biegeners PLease #I hope this post was good when # when any help for biegeners  |
| | anyone know what is this error , how to fix it ??? ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ #include<iostream> #include<string> #define MAX 6 #define size 10 using namespace std; struct student { string name; int id; string prog; double cgpa; }; class stinfo { private: student data[size]; int last; public: stinfo(); void selectionSort(int A[]); void …  |
| | hey guys this c++ code which needed to convert to asm and when user enter 2000 the clock shoud show lest then 5 sec.... for (a=0; a<=y; a++) for (b=0; b<=y/2; b++) for (c=0; c<=y/3; c++) if ((a + 2*b + 3*c) == y) count++; this is the question -finds … |
| | Hi, I have inherited a pair of applications: a client.exe and a server.exe. They run on different PCs and communicate through TCP/IP. The server comes with an OCX file: server.ocx. The client has its own OCX file: client.ocx. (I suspect there could be a mismatch between the two ocx files.) …  |
 | Does anyone know how to call a binary executable file from another program. I have a simple binary file which can take command line arguments called **InputProgram.exe**. I have made another program of which I want to call InputProgram from and pass it an argument. Not this is going to … |
| | Guys..My task is to convert for loop c++ to asm....and the speed shoud be fast....i managed to convert to asm the loop part but when i run and enter 2000 it shows 33 second is it possible to be lower the 5 second.... #include <iostream> #include <ctime> using namespace std; … |
| | Hi everybody I need some professional help from experienced people. I am writing a program in C++ about a game. I have to specify a class Questions with attributes question, answers and difficulty. In the program i should have methods add, edit, select, search, print and remove. The problem that … |
| | for (a=0; a<=y; a++) for (b=0; b<=y/2; b++) for (c=0; c<=y/3; c++) if ((a + 2*b + 3*c) == y) count++; |
| | How do we create datatypes in C++. Eg. creating datatype called "myowndatatype" with sizeof(myowndatatype) = 3  |
| | `Hello and thanks for reading my post. I am trying to develop a program that will select a file for opening based on user input. I did have this code working at one point but no longer. I am a beginner at C++ so I am trying to learn from … |
 | Hello I'm using the book C++ Primer 5th edition and in the beginning there is an exercise to change a sum into a prodcut. #include <iostream> int main() { std::cout << "The sum of " << v1 << " and " <<v2 << " is " << v1 + v2 …  |
| | As the title says, it's a simple trie class written in C++11. The only operations implemented are insert, remove, and search (both prefix and exact matches). I sort of abandoned the test/debug process, and while I'm somewhat confident that there aren't any serious bugs, I can't guarantee it. Use this … |
 | If the prototype of my function is void sell_item(store **head,store **tail). In main i've passed sell_item(&head,&tail), where head & tail where both pointers of store(struct) type. Now I want to access the the content where head is pointing to. How shall I access it? Like *head->next??? But this is not … |
 | #include<iostream> #include<string> #include<vector> #include<algorithm> #include <cstdlib> using namespace std; int main() { char s[5]; string g; int p=345; sprintf(s,"%d",345); g=s; g+=".mp3"; cout<<g<<endl; getchar(); return 0; } I have a very small doubt about strings. this is code snippet i have shown. when i have called sprintf(), then it has changed …  |
| | This is a homework assignment. I am in a Software Engineering class and we have to implement a change request in a group project. My group chose Winmerge, and my change request is to do the following: 1.) Set the divider to reset to the middle on double-click. 2.) Allow … |
| | am using dev c++ updated version for my project am using myql c api problem is when i run my application it stop and says that mysql.dll is missing , currently when i place mysql.dll in the app folder it cant give me the error , so i want to … |
| | Hi, I am using visual studio 2008, C++ MFc. I have create 2 edit box. I will let user key in at the editbox1. Then i will get line and paste what user have key in to editbox2. I want it to be something like hyper terminal format. That mean … |
 | Hello, When i compile i get theses undefiend reference to extern lobal variable. In my code, i try to do an file that define it and extern it on SystemeBataille.cpp call th definitor on main.cpp but same error. If i place my extern on an specific function exemple SystemeBataille::placeExternHere i … |
| | Show the hex addresses and variable values after the statements have been executed. (All pointers are 4 bytes!) The first byte of memory below is xFF2A. Not too sure if I am doing this right. Please help. Thanks. t s r q x d c b a 8 8 4 … |
 | I tried to create an hourglass with asterisk characters using 'for' loop... both decrement and increment works fine, but I got stucked with text alignment where those asterisks supposed to be printed in the center and justified to bring an hourglass look instead of being sticked to left or right … |
| | #include<iostream> #include <cstdio> #include<string> using namespace std; typedef struct node node; struct node { int value; node * child[26]; }*root; node * newnode() { node * nn; nn=(node*)malloc(sizeof(node)); nn->value=0; for(int i=0;i<26;i++) { nn->child[i]=NULL; } return nn; } bool insert(string s) { node * temp=root; bool xx=false; for(int level=0;level<s.length();level++) { int … |
| | Can't find out the error. #include <iostream> using namespace std; struct node{ int id; int *next; }; node * get_data(int ); node * get_data(void); void insert_node (node **, node **, node *); void display_data(node *); int main(){ node *head=0, *tail=0, *newPtr=0; newPtr = get_data(); insert_node (&head,&tail,newPtr); display_data (head); return 0; … |
 | Hello everyone! I know QObjects doesn't support copy constructors but how can i create a copy of a QObject. I want to make changes to the object while still maintaining the original copy. Thanks |
| | Hello, my Qt app gives the following run time error > HEAP[testApp.exe]: > QInvalid address specified to RtlFreeHeap( 0D920000, 0F29F1C0 )uoted Text Here But it's free from error when i comment out these lines table->setCellWidget(currentRow,4,wid); table->setCellWidget(currentRow,2,++wid); table->setCellWidget(currentRow,1,(++wid)); Please i need help seriously. for(int i=0; i<currentSem->courses->count(); i++) { QVBoxLayout *vlayer = … |
| | Hey guys I just learned how to work with header files but I have a simple error . I suggest you guys dont look at gameboard.cpp because it just runs fine with ubuntu and no errors with it. my problem is when I run the main it gives the eroor … |
| | I need help trying to figure out how to insert into a multi linked list. I know how it works with a linked list with only one piece of data but not 2 pieces with 2 pointers. Essentially what I want to be able to do is creat a multi … |
| | We were assigned the birthday paradox as a homework assignment. The program intakes a number of people to check and returns the number of people with a shared birthday. I seem to be having trouble figuring out the loops for the function check_birthdays. I input a number and a number … |
 | //This program is supposed to read 20 scores from an input file and initialize them to an array //then print the components into 2 separate output files #include <fstream> #include <string> using namespace std; const int ARRAY_SIZE = 20; void printArray1(int scoresArray[], int sizeX); void printArray2(int scoresArray[], int sizeY); ofstream … |
 | I just have a program to implement RSA encryption, and it runs but when I try to encrypt a message it crashes. When I bebug it won't show any error, What is the issue,How Can I fix the program? #include<iostream> #include<cmath> using namespace std; #define MAXLENGTH 500 int size = …  |
| | #include <iostream> #include <cmath> using namespace std; int main () { double n = 1; double sum = 0 ; double previous = 0; double y; while(fabs(double (sum - previous)) > 0.001) { y = -1 (exp(double (n))) / n; **<<<Error is here<<<<** sum += y; previous = sum - … |
| | what is static function in c++? when should a function is made static? |
| | So I have always developed in a 32 bit environment, but now have the opportunity to step into 64 bit development. What I am working on requires a lot of pointer aritmatic, and I am a little confused how primitive data type sizes vary from 32 to a 64bit platform. … |
 | I am trying to write a program that will test for the birthday paradox. I need to run a series of experiments on randomly generated birthdays, which test this paradox for n = 5, 10, 15, 20,...,100 (n = number of people in any given room). I need to run … |
 | Hi there, I was wondering if anyone could help me, I’m trying to send various packets of data over network via UDP. I’m using the sendto() function in winsock2. I’m trying to send different data types over UDP, for example; I have positional data such as: int time; float LAT; …  |
| | can anyone solve this problem for me ??? ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ #include<iostream> #include<string> #define size 10 using namespace std; struct student { string name; int id; string prog; double cgpa; }; class stinfo { private: student data[size]; int last; public: stinfo(); void add(string name, int id, string prog, double cgpa); }; stinfo … |
| | I want to assign a value to the variable x which belongs to the class X using friend function. Is there any way to assign a value, say 30 to the variable x using the friend function. I tried the following code but the output is different. [CODE]#include <iostream> #include … |
 | hi, i am very happy that i found this forum :) i am a beginner so, i have some question. if somebody could answer me i will appreciate it. can i write a program for numerical analysis in Turbo C? i have to write program but i don't know where … |
| | which one should be preferable from the following two nested for loops: 1. for(i=0;i<100;++i) { for(k=0;k<10000;++k) { <lines of code> } } 2. for(k=0;k<10000;++k) { for(i=0;i<100;++i) { <lines of code> } } why? |
 | when you write code in the main function if you put functions in the file all you do is nameoffunction(); to call it. now my question is this lets say you have a menu in a class. call it bank. in the main to call that function . ive tried … |
| | A Very Good Morning to you, Hi and how do you do ? I hope your day is going great. I would like help writing a CPP Function() with the following criteria :- It is to search for 4 digit numbers in a Pick 4 Game. 1. Given a 2D … |
| | This is a program to generate possible combinations Somehow everytime I run it - in VS2012 I get this error - "Expression:Vector Subscript out of range" ? Can someone please help to get this code working ? A Big Thank You !!! :D #include <iostream> #include <vector> class CombinationsGenerator { … |
| | http://i.imgur.com/kWrBizl.png In the above Image, I generator a Sudoku Matrix of 9x9 values. Is there any way I can allow user to enter individual values by moving around the caret and typing? Basically, I want them to just be able to change the values displayed on the screen by moving … |
| | I'm writing a program that will keep track of every Anime/Manga I watch/read(I'm an avid fan). I'm trying to make a database in order to keep track of all of the titles of the Anime/Manga. My problem is that when i try to add a new title to the existing … |
 | Hi! I want to make a CONVERTER. I designed it, so I just have to program some buttons. The problem that I have is weird. I programmed a button that says : CONVERT TO METER. After I build the program, I get ERROR C1075 : end of file found before … |
| | Hello Everyone i am trying to write a program for printing all the combinations of a string.I do not want any help regarding the algorithm but i need help figuring out why this program is giving the error message "First-chance exception at 0x761bc41f in word.exe: Microsoft C++ exception: std::out_of_range at … |
 | I am having a runtime error happen when I run my program and can't seem to figure out why. It is happenning on my insertion sort function. I also am going to have to do a selection sort with this and aany help would be greatly appreciated. Here is my … |
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