51,593 Topics
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| | I am trying to get my program to run when I input two integer numbers in the subroutine, and then do the following math (x+y)/5. Dont know where I am going wrong. #include<iostream> using namespace std; int Divide(int X,int Y); int main() { int X; int Y; cout<<"first number:"; cin>>X; … |
 | background. I usually test my code in both debug and release mode each time I make changes, but forgot for half a day and now I have errors. I had gotten carried away thinking I was in the zone, and left it in release mode, when I realized and tried … |
| | first of all, sorry if this thread is in the wrong section, but i think this is the most appropiate one i need clear instructions for installing AND configuring QT for my machine(i am running windows 7 on 64bit) i don't want other reference links unless they perfectly suit my … |
| | I have a question of how it would be possible to change the IP address to a randomly new IP address. How would I go about to do this ?  |
| | Dear all, i am soon entering 11th grade and will be studying c++ in full length. I want to learn another language to compliment it which can provide me the freedom to over a variety of devices and paltforms. I have chosen asm(assembly) as i think it very basic to … |
| | I have three funcitons that all have arrays. I need to make a print function. Here is one of the functions. void findUpperCase() { infile.open("trytext.txt"); int count = 0; char letters[MAX_LETTERS]; int upperLetters[26] = {0}; while ( infile.peek() !=EOF ) { infile >> letters[count]; count++; } infile.close(); for ( int … |
| | Hi guys. I want to write a keylogger which logs all strings I copy via <CTRL>+<C> My problem is that I loose track of interessting links or code-snippets when overdoing it. So I want a basic keylogger which notices every hotkey event and copies the content in the clipboard into … |
| | #include<iostream> #include<string> using namespace std; class student { public: void input(string name, long id, int grade1, int grade2, int grade3); void GPA(float) const; void Display() const; private: string name; int id; int grade1; int grade2; int grade3; }; int main() { string name; int id; int grade1,grade2,grade3; float gradepoint; student … |
| | ## I know we haven't been doing much of these C++ Community problems so I though I'd write one up to get it started once again.## **Problem Statement:** For some integer `v,w,x,y,z` find all solution to the following equation 1 1 1 1 1 - + - + - + … |
| | int main() { float a,b,c; cin>>a >> b >>c; if(a<(b+c) && b < (a+c) && c< (a+b)) { cout<<"\nIt is a Triangle.”; if (a==b && b==c) cout<<"\nIt is a Equiletaral Triangle.”; if(a==b || a==c || b==c) cout<<"\nIt is a Isoceles Triangle.”; else cout<<"\nIt is a Scalene Triangle.”; } else cout<<"This … |
 | Hi, I am trying to calculate the distance between two points, by using Pythagorean Theorem and the x,y coordinates of two points. However, I have the following issue in line 14: "*Expression must have integral or enum type*". #include <iostream> #include <math.h> using namespace std; int main () { float …  |
| | I have this code: sigc::connection conns[4]; And I get this error: Program received signal SIGSEGV, Segmentation fault. 0x00f4b620 in g_type_check_instance_is_a () What does this mean? |
| | Hi all, So I'm trying to learn how to do a hash table with separate chaining, but it is giving me several issues. The hash table I'm trying to make will hold instances of a class named Person and uses Person's data member phonenumber for the key. Currently, the main …  |
| | Hello all, I am working with a program to calculate the days in a given month. We are to use functions and bool. I have the below code, which worked until I tried to create the function. I continue to get an error about "numberOfDays" not being initialized however if … |
| | I am trying to print out a report for a 12 month interest summary. So far, I cannot seem to get the ending balance for the previous month to be the starting balance for the next month. Here is the code I have so far: #include <iostream> #include <string> #include …  |
| | Hi all, I am planning to design mibile app using c,c++ if possible.can any one please suggest me how to design it if possible. Please your thoughts regarding this and appreciate your suggestions. Thanks, Va.  |
 | I am trying to use the ncurses menu library to create a menu. I found some wonderful sample code online and it displays great on my screen, however I can't figure out how to select an option and have it go to a new menu or have it select a …  |
| | Hey guy I'm wondering if there is a tutorial or example code for a C++ RPG inventory system. I've surfed the website and I only discovered to make two classes, item and inventory and to use each of them for item's detail and holding the items in a linked list. … |
| | #include<iostream.h> #include<fstream.h> #include<conio.h> #include<process.h> #include<stdio.h> #include<string.h> int access=0; // for accessing data modifier functions int report_s=0; int report_u=0; class element { int at_no; float mass_no; char name[15]; char symbol[4]; int group,period; //for displaying the table public: void input() { cout<<"enter elements name \n"; gets(name); cout<<"enter its symbol \n"; gets(symbol); cout<<"enter … |
| | Hello everyone, I was working on a program that was meant to open something the user put in. Basically, the user would put in the path and then the program would open whatever was there. I can't work it though, every time I put in the file path, it says …  |
| | I'm trying to write an algorithm for a larger project that will take two strings which are both large integers (only using 10 digit numbers for the sake of this demo) and add them together to produce a final string that accurately represents the sum of the two original strings. … |
| | I am writing a program that calls the memory address of different variable types. I am having troubles with getting the address locations for my array and my char pointers. Here is what I have so far: #include <iostream> #include <string> using namespace std; int main() { const int NUMBER_LIST … |
| | hi, this is my assignment and my code is below too. I don't know why it does not work. #include <iostream> #include <fstream> #include <string> #include <cstring> using namespace std; int main() { int const size=20; char word[20]; char dash[size]={" "}; char guess; int number = 6; int lives; int …  |
 | I have written a working templated linked list that can hold a number of Types. Each of which are created with new before sending them to the InsertNode function. in Main: CMyType* pMyType1 = new CMyType; // Create a new MyType* pMyType1->m_iData = 5; // Hold a value LLMyTypes.InsertAtEnd(pMyType1); in … |
 | How could I add a external library to the native c++ lirary path at Ubuntu to be found by #include from source code? I have some couple of sources that I try to include them by all the codes written on my machine thus instead of coping all the library … |
| | I am trying to set up a 12 month table summary in a bank account program. The problem I have is I am trying to figure out how to set it up correctly. Here is my class and application from the bank account: Here's the class part: [CODE]class SavingsAccount { … |
| | Can you anyone here tell me how to install DJGPP in windows 8 ?  |
| | i've been working on a game project, its a slider platformer and i've been having problem with getting the movement working, the movement is time based instead of being fixed to the frames per secound so the movement is consistent. the movement was working when i was testing out the … |
| | I just built a new computer and I am trying to keep it as "clean" as possible. I have the purchaised version of VisualStudio 2008 but I dont know wether I should install that, or the latest express version? |
| | hello. i doing my work and facing problem in "<<" operator i declare that method in the class public: friend ostream& operator<<(ostream& out, T theList); and in the main i am using that to print the list in this way cout<<"First List is \n"<<list1; but it creat error in the … |
| | I am trying to have a C++11 compiler that works. It seems (if the publicity is right... and typically it never usually is!) that gnu g++ 4.8 might be it. So I installed Ubuntu 12.04 read the instruction on multiple sites, did EXACTLY as it was said, got (obviously) errors, … |
 | #include<iostream> #include<conio.h> using namespace std; char square[10] = {'o','1','2','3','4','5','6','7','8','9'}; void box(); int checkwin(); int main() { char f, g, e[10]={'o','1','2','3','4','5','6','7','8','9'}; int a; int c, d; for(a=1;(a<=9);a++) { int b; system("CLS"); box(); if(a%2==1) { cout<<"player 1 enter your num\n"; cin>>b; } else { cout<<"player 2 enter you number\n"; cin>>c; } if(b==1&&square[1]=='1') … |
| | In this code, I need to put a limitation in every part where the user is asked to input data. The user will be asked to input a grade ranging from 50-100, and if his input is not in the range, the program will display a warning, and if the … |
| | I try to reference a struct from another class in my code and it gives me an error, saying I have a syntax problem. //Figure index struct FIGURE_TYPE { //Where to crop the image from SDL_Rect crop; int x; int y; }; That's the struct in Figure.h, void set_camera ( … |
| | Another quickie. This is a basic class for working with Windows path strings. It's based off of .NET's System.IO.Path class, but doesn't contain any API dependencies (and thus doesn't normalize the paths, it's all straight string handling). Methods that I've personally found to be useful are included. The class is … |
| | I am new to c++ and to using graphics libraries, so please forgive me if I have made a silly mistake. I am trying to compile a program that creates a window with one button from an example I found online. This is the error I get when I try … |
| | Can someone tell me why I get this error "terminate called after throwing an instance of 'std::out_of_range' what(): vector::_M_range_check Abort trap" when i run the following code? user and reservations are vectors of two classes else if (str == "lookup") { getline(cin, Name, '\n'); if (Name == user.at(i).getName()) { for … |
| | Pleace help me with this!!!how can we change a decimal number into binary,octal and hexadecimal using c++???? |
 | Hello members, I have started studying C++ with the book "C++ primer"( by Stanley B. Lippman, Josée Lajoie& Barbara E. Moo). I use Visual Studio 2012 Ultimate and make my projects on Win32ConsoloApllication. There was an example and I wanted to make it over for myself. #include <iostream> int main() … |
| | #include <iostream> using namespace std; int main() { int rows = 3, columns = 3; int ****p; p = new int***(); *p = new int**(); **p = new int*[rows]; for(int i = 0; i < rows; i++) { ***(p+i) = new int [columns]; //Crashed at ***(p+1) why? } } I'm … |
| | Hi all! I've just started working on my Binary Search Tree and already there's a problem that I can't seem to understand. Ok here's the problem, when I compile its ok but when I run it there's an error, i've managed to found where the problem is but I don't … |
 | Does anyone know how I can add "0" to the left side of a string? If I get "1234" I'd like to make it "012345", if I get "1234" I'd like to make it "001234". Any suggestions? |
| | #include<iostream.h> #include<conio.h> #define size 5 int stack[size],top=-1; void push(int s[size],int &t,int m); int pop (int s[size],int &t); void main() { clrscr(); cout<<"1-push \n 2-pop \n 3-exit \n"; int x,y; do { cout<<"enter number to choice:"; cin>>x; switch(x) { case 1: cout << "enter anumber to push in stack \n"; cin … |
 | i am learning C++ from a good time now.. but I am still very confused sometimes in the use of array(char) and string.. can anyone please tell me that what exactly all differences between string and char array ? what can i do with array which i can't do with … |
| | Hello everyone. I saw a post of one of our friends here about a problem he found of the SPOJ website. So I went there to check it. I found it to be very cool; I started to do the exercises but when I got in the 2nd, a prime … |
| | hai i am a student working on my project on C# coding in which i need to display the datas of the solar inverter readings which i already uploaded to mysql database and from that i need to show the datas through C# coding. i did the coding for displaying … |
| | #include<iostream> #include<vector> #include<stdio.h> #include<string.h> #include<stdlib.h> #include<algorithm> #define READY 1 using namespace std; typedef struct task_node { int task_id; int period; int wcet; int arrival_time; int deadline; int state; int ceu; int slacktime; }task; void read_input(vector<task> &); void print_task_vec(vector<task> &); bool comparebyperiod(const task&,const task&); bool comparebydeadline(const task&,const task&); bool comparebyslacktime(const task&,const … |
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| | Problem Statement: You are required to write a program for calculating area of Trapezoid. Formula for calculating area of trapezoid is Where a and b are two bases of trapezoid and h corresponds to height. |
| | Hi programmers, I am a c# programmer but I have a very big project in C++ (Which I am not familiar with) and I am facing a big problem. As part of the project, I need to convert the image (any image of any type bmp,jpeg,png...etc) to grayscale using openMP. … |
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