51,593 Topics
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 | Hi, I am currently writing a library for dynamic use, and in it I have some string functions. This particular one returns a substring of a given string from the rightmost, determined by a given count. I just get the feeling that I'm missing some error checking and would like … |
| | could anyone tell me what are the max values that can be entered in turbo c++ gotoxy function..... the help says that (35,25) is the bottom right position in the window but i can enter text even upto x-coordinate 50.. what i want to do is enter text at y- …  |
| | I need a simple c++ code that prints the semantic errors of the compiler. Can anyone help me please?  |
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| | do u have any code to find a system of two linear equations with two variables??  |
 | How do I pass a single row of a 2 dimensionsl aarray to a function? #include <iostream> #include <iomanip> #include <fstream> #include <cstdlib> using namespace std; // ------ Prototypes ------------------------------------------------------ double calcNums(double[]); // ****** MAIN ************************************************************ int main() { double nums[2][5] = {1,2,3,4,5,6,7,8,9,10}; calcNums(nums[1][5]); return 0; } double calcNums(double nums[1][5]) … |
| | How to create a class in visual studio 2012? |
 | i know use the some functions for put an image on window: void setImage(string FileName) { HBITMAP hImage =(HBITMAP) LoadImage(NULL,FileName.c_str(),IMAGE_BITMAP,20,20,LR_LOADFROMFILE); HDC image = CreateCompatibleDC(NULL); SelectObject(image,hImage); BITMAP bitmap; GetObject(hImage,sizeof(BITMAP),&bitmap); BitBlt(GetDC(this->hwnd),0,0,bitmap.bmWidth,bitmap.bmHeight,image,0,0,SRCCOPY); } but i get 2 problems: 1 - the image isn't showed with original size :( ; 2 - after 2 … |
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| | In which **real** situations have you seen C++ usage for web applications wth PHP? I've looked throught the forum, I've asked uncle Google and I know that: - PHP extensions can be written in C/C++ - there is a great amount of C/C++ libraries you can use in PHP projects …  |
| | Create a structure for a classroom. Make sure it includes the following: Room Number, Lecture Name, List of Students, Number of chairs, Window (Yes/No), Projector (Yes/No), Available(Yes/No). Instructions: Create functions that allow you to add data to the attributes of the classroom. Create functions that allow you to print out …  |
 | I have no idea in how to make a simple database using C++. Please share some ideas or LINKS in how to make a simple database using C++. thanks in adnvance! |
 | Following up on a discussion on [this thread](http://www.daniweb.com/software-development/cpp/threads/470519/looping-using-recursion/), I did some tests on the performance of recursion vs. iteration, and some interesting things happened, so I thought I would share the results. I'm gonna structure this a bit like a lab-report, because that's really the best way to put it. …  |
| | Design an online lottery game in C++ which will randomly store 6 number in the range of 1 to 30 as the winning numbers. Then it will ask the user to enter 6 numbers of their choice and match with the winning numbers. It should display the following: “Jackpot” for … |
| | Hi, I've been testing about converting infix to postfix expression. I've made the code and it compiles. My problem is it stops working when I run it. This involves the use of stack and arrays. I just call the method polish to get the strings infix and postfix, and to …  |
| | I have a c++ file in xcode that I want to import to netbeans the problem is the c++ file is lacking some files which netbeans requires in order to open that up in netbeans(e.g makefile) How do I do that?  |
| | Below is my code for printing prime numbers up to a given input by user. However, my calculations are not working correctly and my output is printing twice. Any idea? :sad: #include <iostream> #include <cmath> using namespace std; void prime_num(int); int main() { cout << " Enter a number and … |
| | I am making a game in cocos2dx(c++).Here i have to make dynamic sprites that are falling top to down and on touch i have to kill them.I mean the sprites are of insects and they will be killed on touch The problem is that I am unable to get the … |
 | #include<windows.h> #include<iostream> using namespace std; int card[9],usercard[7],comcard[7],cardsuit[9]; void winner(); void highest(); void gotoxy(int x,int y) { COORD CursorPosition; CursorPosition.X=x; CursorPosition.Y=y; SetConsoleCursorPosition((GetStdHandle(STD_OUTPUT_HANDLE)),CursorPosition); } void decone(int num,int x,int y) { int i; char suit; if(num<15) { suit=3; } else if(num>14 && num<28) { suit=4; num=num-13; } else if(num>27 && num<41) { suit=5; … |
| | The below program is working but it have some constraint #include<windows.h> #include<iostream> using namespace std; void gotoxy(int x,int y) { COORD CursorPosition; CursorPosition.X=x; CursorPosition.Y=y; SetConsoleCursorPosition((GetStdHandle(STD_OUTPUT_HANDLE)),CursorPosition); } void decone(int num,char suit,int x,int y) { int i; for(i=0;i<200000000;i++); gotoxy(x,y); for(i=0;i<11;i++) { cout<<"*"; } y++; gotoxy(x,y); cout<<"*"; gotoxy(x+10,y); cout<<"*"; y++; gotoxy(x,y); cout<<"* "<<suit; … |
| | finds the average number of hours per day spent programming by each student over a three-day weekend. User should enter the number of hours worked each day and number of students. |
| | So im making a simple RPG using c# and xna. For collision, i am using a text file that contains data about whether a tile is passable or not. I iterate through them and create rectangles based on the position of the 'bad' tile in the text file. I then … |
| | So im posting this here and not under game development because this is more of a problem solving question, not directly game related. Im making a simple RPG using xna. Im currently working on collision detection, however running into difficulty. I can successfully check for a collision between the player … |
| | Hello, I need help in solving 3 errors in my C++ code The first error is** line 95 'output_minus_10' was not declared in the scope** The Second error is **line 96 'output_plus_10' was not declared in the scope** The warning is **line 104 unused variable 'R_junction'** #include <cstdio> #include <cmath> … |
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| | Good day, I must be blind .. I am developing my first "Visual Studio" desktop application. My apps are normally always Internet Apps. I have about 20 text boxes, but I want to give the user the ability of pressing Enter, and "defaulting" to the Enter button on the screen. … |
| | So i'm making an rpg game in xna. I can move my player around the screen, however it can also move off the screen. How can I implament a simple camera that will follow the player and prevent them from moving off of the screen? I only need it to … |
| | Hi, I have a txt file that contain certain data inside it. Example of the txt file: Name=John Age=20 Address=c-34, Newyork Name=Martin Age=23 Address=123, New Delhi .... .... and so on..... Now I have to process the each line get from the file and put the values into arrays. arr_name, … |
| | Hello, I am currently trying to use boost asio for IPC. I ran into 2 strange issues: 1) when using the acceptor class, when I bring my process up, I get the error 'Already open' when trying to listen. The port I am trying to bind to is definitely not … |
| | Compile program functions for: -Enter of a keyboard and a file into an array (by adding) data to 30 girls in the competition "Miss World" number, name, surname, date of birth, physical data, state and display the current contents of the array on the screen -display output data for a …  |
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| | Any one please help me. i done a little project using thermal printer. Now my Tl ask me to convert it to Dot Matrix printer. Can u send any sample code for this...? waiting 4 reply thank u.. with love guru  |
| | I executed a simple C++ program in Visual Studio2010 using OpencV version 2.2 to start the camera and display the video simaltaneously.But the camera gets started and only the window came as output and not the video capture simaltaneously..Here is my code.Is there any error in camera..Do we need to … |
 | I have this program,how to find reverse numbers? #include<iostream> #include<fstream> #include<string> using namespace std; const int array_size = 10; //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ //function to enter the number choise1/// to "&" dieuthinsi noumerou void get_numbers(int num_arr[array_size], int& numbers){ int count; cout << "How many numbers do you want to enter? "<<endl; cin >> … |
| | Problem: A salesman travels from one to another state. he may visit either n=2,3,4,5 or 6 cities of punjab. For every number of cities he may adopt different routes. Some routes will be longer and other rwill be shorter. We neeed to design a C++ Program. *TO DISPLAY EACH ROUTE … |
| | Hi guys, Tomorrow is my theory paper exam of C++ OOP and Data Strucutre. Paper will be based on 50% theory Q/A and 50% on coding implentaion. Can you give me some hints to prepare for this coming exam? PS. I have gone throw all lectures slides and course material, …  |
 | i'm working on a array header from base definition of an array to create an array of any type with this header,so i created a array class with functions and constructors. this is my code so far: #include <iostream> #define newline "\n" class Arr { public: typedef float T; public: … |
| | Write a program to compute and print the number of miles a car has travelled during 2013 and compute the average litre comsumption per mile. the program shouls ask for daily number of miles, also give its output the total amount spent on petrol for the year. |
| | I have a vector personInfo that contains class objects of person details vector<person> personInfo; I am trying to use std::find to search for a existing name in the vector. I overloaded my == operator. person.h class person { public: std::string name; friend bool operator==(const person &lhs, const person &rhs); }; … |
| | Write a program to evaluate the feed back of teacher accordingto following questions. 1. Behaviour of teaching in class. 2. Teaching style in class. 3. Questing Methaelogies they adopt. You to judge on the basic of following critenia. 1. Not Goog 2. Natural 3. Good |
| | Hello guys,i have some issues uploading a task 10152(shellsort) in the online judge website. The code works fine,i get the results you need to get on my computer,but when i try to upload it on the site it tells me that i have an error. this is the code: #include … |
| | Hi, I want some recommendation for libraries written in C/C++ that has iterative solvers like Jacobi, Gauss-Seidel or SOR, Does anybody have a recommendation? Thanks!  |
| | So i'm making an rpg game with c# and xna. How can I create a simple camera that follows the player as they move? I only wish for the camera to move as the player reaches the middle of the screen. I dont require it to rotate, zoom in/out like …  |
 | I am looking for a noob friendly C++ IDE for mac computers. I'm looking something similar to microsoft visual studio. I have tried xcode, but it appears to be missing some of the basic cpp. and h. files like stdafx. |
| | I was writing a program that opens a file assigns each element to an array. I was wondering if anyone had suggestions on how to get the number of items in a file, without knowing before hand. I was usuing this: int main() { ifstream inputFile; inputFile.open("P6.txt"); int index = … |
| | I've been toying with some code for the last thirty mins to try move a substring from one cell to another. In debug I can see the correct contents being picked up and moved to the new cell and even got a save prompt popup when running over line 31. … |
| | //this is a mine...sieve's algorithm implementation please tell me where i am going wrong...// #include<iostream> #include<vector> using namespace std; int main() { int a,b,p; vector<int> v; cin>>a>>b; for(int i=a;i<=b;i++) v.push_back(i);//inserting all values upto given limit in a vector.. for(p=2;(p*p)<=b;p++) { for(int n=2;(n*p)<=b;n++) { int s=(n*p); v.erase(v.begin()+s);//erase all multiples of 2,3....from … |
| | Ihave a vector that contains monthyear Jan2013 Jan2013 Jan2013 Jan2014 Jan2014 Jan2014 Jan2014 Feb2014 Feb2014 Basically what I want to do is to search through the vector, for every same record, group them together like e.g total count for Jan2013 = 3; total count for Jan2014 = 4; total count …  |
 | I would like to take a screenshot of a region of my screen programmatically (so I can do it every time through a loop, for example.) Does anyone know how to do this? I guess it would involve the win32api - I've not used this before so any hints would … |
| | I have a vector which contains class objects of classObjects vector<classObjects> classObjectVector; I am trying to use std::find to search for a record in my vector, but I get an error message error Invalid operands to binary expression due to this line. if (std::find(classObjectVector.begin(), classObjectVector.end(), "aElement") != classObjectVector.end()) { //found … |
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