51,593 Topics
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| | hi :) is there a possible way where in we can combine two rows for an example i have this code: #include <iostream> #include <fstream> #include <string> using namespace std; int main() { ofstream outfile; outfile.open("1stRow.txt"); for(int i=1;i<10;i++) outfile<<i<<endl; outfile.close(); ofstream outfile2; outfile2.open("2ndRow.txt"); for(int j=2;j<11;j++) outfile2<<j<<endl; outfile2.close(); //return 0; } … |
| | how to include c++ dll in a windows application created in c#? |
| | I am trying to do a problem of solid waste collection vehicle routing using Genetic algorithm in C++. So here raises the question why should I use GA. How do I defense this question? My main logic is solid waste collection problem is a non linear problem and for solving …  |
| | I have a recrusive program -Im new to it!- that gives all the possible ways to make a money to smaller coins for example : we want 10$ the coins are 5$ , 2$ , 1$ we can give 1 5$ , 2 2$ , 1 1$ or only 10 …  |
| | Show 10 students data ( student id, father's name, phone number, mail id) in a file and write a C program to display the student's data whose id is given by a user through the keyboard. Please help me out in solving this program. I know how to read data … |
| | How to call a C++ function which is compiled with C++ compiler in C code?  |
 | Hi Guys, i am currently creating a database in c#, this i can do, the problem i am having is trying to network it to my wifes pc, after i build (release version) i transfer to my wifes pc, but it doesnt work, says that the database is read-only? and … |
| | I have an anagram program that if you type in a word's characters in any order, the dictionary file will be able to export it. However, my assignment is to build words that are shorter than the inputted search area in a one-to-one letter correspondance. An example of this would …  |
| | Hi, I need to make a video player. I have sequences of image data (bitmaps) which are very large (1920x1080), and need to display them onto the screen at least 60FPS. What is the most efficient way to do this so I won't get loading/displaying delays? PS: I'm thinking to … |
| | Just a thought that woke me up this morning. A means of providing 'property' type constructs in C++ classes similar to python properties. # Header # #ifndef _HXX_CPROP #define _HXX_CPROP /** * Helper class to connect a 'property' in a * c++ class to getter/setter methods * */ template<class T, … |
| | need to design a code for my first assignment in dev c++ for olmypic judging, 5 judges, 10 competitors, need to score each competitor between 0.0 and 5.0. i cant use the highest score for each competitor or the lowest and must average the remaining results. any help? i have … |
| | How to linked list take a array for input???  |
 | Hi there, I have an array of unsigned chars SOURCE, i need to combine into DESTINATION, i want to turn: SOURCE[0] = 3 SOURCE[1] = 9 SOURCE[2] = ' ' SOURCE[3] = 0 SOURCE[4] = 4 SOURCE[5] = ' ' SOURCE[6] = 7 SOURCE[7] = d into DESTINATION[0] = 39 … |
| | I'm using Visual C++ express 2010. Whats wrong with this code: (A video tutorial uses this code and works fine on theirs) #include <iostream> using namespace std; int main(){ string myString = "hello"; cout << myString << endl; return 0; } ??? Says: error C2679: binary '<<' : no operator … |
| | #include<iostream> #include<string> #include<vector> #include<set> #include<map> using namespace std; struct PoiDetails { int x; std::string s; }; int main() { struct PoiDetails oBj; std::map<std::string, PoiDetails> vName; oBj.x = 1; oBj.s = "str1"; vName["Jhon"] = oBj; oBj.x = 2; oBj.s = "str2"; vName["Ben F"] = oBj; oBj.x = 3; oBj.s = "str3"; … |
| | When I write program in Visual Studio 2010, then error comes that "cannot find or open PDB file". Is their any solution of this problem?  |
| | #include <cstdlib> #include <iostream> #include <graphics.h> int main() { initwindow(1366, 768, "Prim's Algorithm"); int midx,midy; // /**************Node 0 creation***************/ midx = (getmaxx()/12); midy = (getmaxy()/12); rectangle(midx + 30,midy-10,midx - 30,midy+10); midx = (getmaxx()/12)-1; midy = (getmaxy()/12)-8 ; // setcolor(10); outtextxy(midx, midy,"0"); /*******************Right Vertex******************/ setcolor(15); midx = (getmaxx()/12) + 30; midy … |
| | <html> <head> <title>Nutrient</title> </head> <body> <? $filName = "resource.txt"; $objWrite = fopen($filName, "w"); $objConnect = mysql_connect("localhost","u52030177","guillaume") or die("Error Connect to Database"); $objDB = mysql_select_db("u52030177"); $strSQL = "SELECT * FROM Nutrient"; $objQuery = mysql_query($strSQL) or die ("Error Query [".$strSQL."]"); //$link = mysql_connect("localhost","u52030623","u52030623"); //mysql_select_db("u52030623"); mysql_query("SET NAMES UTF8"); //$sql = mysql_query("select * from … |
| | hi,i am new to programming and i got an assignment which is very difficult,i hope anybody can help me here !! You have to make a racing game in C++. There are two players in your program. They play by throwing 3 dices and then moving forward. Your program should … |
| | pls help me...i wnt to know how to delete a word from a string...cant make it out..pls help... |
| | Hi again everyone. A really newby question coming up because I just don't know how to put this. If I want some software which can be compiled as part of my application / project etc, something which has little or no reliance on external programs (all packed in as part … |
| | Hello all... I want the multiplication of the same matrix but in third, forth, fifth... degree. I have made the C++ program and this is the code: #include <stdio.h> #include <stdlib.h> #include <iostream> using namespace std; #define WIDTH 3 #define HEIGHT 3 void main(){ int a[HEIGHT][WIDTH]; int b[HEIGHT][WIDTH]; int n; … |
| | Hi All, I need your guidance for a project (using Visual Studio + MFC) I'm doing. I want to create page flipping animation of a book. There should be a book and when I click on a key then the next page should be displayed. You get the idea? Similar … |
| | Hi, Below is my code Socket CSocket,SSocket; sin_ad.sin_family = AF_INET;//sin.sin_family = PF_INET; sin_ad.sin_port = htons((u_short)m_Port); sin_ad.sin_addr.s_addr = INADDR_ANY; int s_len = sizeof(sin_ad); CSocket = accept(SSocket,(struct sockaddr *)&sin_ad, &s_len); ****if (ioctlsocket(CSocket, FIONBIO, &iMode))//iMode is ulong set to 1. { idc_txtbox.put_SelText("Unblocking of Socket failed"); closesocket(ServerSocket); WSACleanup(); }** if (CSocket == INVALID_SOCKET) { … |
 | 1.If cin and cout objects are in the 'iostream' , why do we need to declare it again using 'std' ? 2.are cout,cin,cerr,clog the only ones in the iostream? 3.under which categories do cin,cout and iostream fall? (library,object etc..) 4.can we use the same iostream for both linux and windows? … |
| | So I managed to get everything working right except for one thing, when I enter the following input: a = 2 b = 2 c = 2 I should be getting this: Root 1 = -0.5 + 0.866025i Root 2 = -0.5 - 0.866025i But I get this: Root 1 … |
| | #include <fstream> #include <iostream> using namespace std; char input_1[256]="1.wmv"; char output_1[256]="2.wmv"; char output_2[256]="3.wmv"; void Append() { ofstream write(output_1,ios::binary|ios::app); ifstream read(output_2,ios::binary); read.seekg(0,ios::end); int size_=read.tellg(); read.seekg(0,ios::beg); char* in=new char[size_]; read.read(in,size_); write.write(in,size_); write.close(); read.close(); } void Split(){ int size_; ifstream read(input_1,ios::in|ios::out|ios::binary); if(read.is_open()) { read.seekg(0,ios::end); size_=read.tellg(); const int half=size_/2; read.seekg(0,ios::beg); char* file_content_a=new char [half]; … |
| | Hey programmers! I am searching for a code and unable to get it. I know this is the best place to ask. Please help me with this file handling code. "How to count the occurrences of a specific string in a text file using c".... Please help as soon as … |
| | Hi there, How do we differentiate between NULL and zero in C++. I have a program in which i assign NULL to num variable but if i apply if condition to check whether it is NULL or zero. Program still gives me result zero. //num = 0; num = NULL; … |
| | Hi everyone, I am stuck in writing Bank Account program. I want that if user wants to create an account, BankAccount class object is created. Then after this i call to its methods such as getBalance() to get the balance in the account. But its not working and I am …  |
| | Hey... If I just built a library for any open source software for C++, what file type should the library files come in? .a OR .o files? Thank you. |
| | Hello, I'm a beginner in c++. I'm trying to write a program that simulates the game "Tic Tac Twice" (the game is described below). The program works ok until it's time for my checkForWinner() function to do its job. I can't figure out why it's not working. Any help on … |
| | what is the difference between std::cout<<"dfdfd"<<endl;//everywhere and using namespace std::cin putting above line at the top of the main function and putting the below line at the top of the main using namespace std; and + 2 bonus questions. 1.Are there any other namespaces than 'std' in c++? 2. Are …  |
| | I'm using Eclipse and I made a program that reads ID3 tags. The problem is that each time I run it, it stops in this line: TagFrame * tmpFrame=new TagFrame(frameID,header.getFilename(),stream); bufferLeft-=tmpFrame->getFrameSize(); tmpFrame->readObject(); frames.push_back(tmpFrame); //This line!!! Where the variable 'frames' is a std::list<TagFrame*>. This block of code is beeing called from … |
| | I'm creating a XML-viewer which should be able to read **every** XML file and put it in a treeview. My goal is to create a XMLViewer control, an user should be able to change certain routines in his own implementations. I provide default implementations that offer a basic functionality so …  |
| | hi all! :) well i wrote a sample code to test threads and i don't get what i want the problem is that the thread i created is starting directly after i create it? but he must start when my j is equal to 25 and then i joining the … |
| | How do I write a recursive function in C++ to display a triangle of * like this using a parameter size (e.g. 4 in the following example): * ** *** **** I am able to write a recursive function to display an inverted triangle like this: **** *** ** * … |
| | Al slam A'lykom .. its kinda freaky to me .. cuz its my first year in c++ ( in fact its few months not even a year ) and i have a project , and its to create an ATM program that asks the user if he is new or … |
| | void Project1(){ unsigned short int x; bool flag = false; cout << "Enter an interger, I will reversed i.e. 301 --> 103" << endl; cin >> x; if ((x > 0) && (x <= 65535) ){ flag == true; cout << reverse_num(x); cout << endl; } else { cout << … |
 | Has anyone ever used PLPLOT. I'm trying to compile one of the examples (which build successfully during the plplot build process) but I want to build the example individually. It's proving very challenging. A million linker errors and no clue on their website as to what is going wrong. I've … |
 | Hi help me to create program for my midterm exam!! System multiplication table Using C++  |
| | I'm trying to outFile to houseData.txt. I did that fine but now all the data is all on the same line 10 times. What did do wrong in my code? House Price Number ------ ----- 329155000235000 459160000235000 505185000235000 500215000235000 345210000235000 456305000235000 344405000235000 501355000235000 401190000235000 300170000235000 I need it to look … |
| | hi guys, i am about a graduate of database management in SQL, but then i wish to study software developemt in C++, can anyone help me locate a good school around the world? |
| | I'm trying to read numbers from a data file into array but when I compile and run nothing shows up. what did I do wrong. I have to do all the reading from the function readData and I need to get rid of the header line but I just put …  |
| | cout << "Enter Student ID (999 to end): "; cin >> searchId; inFile.open(file + ".txt"); inFile.ignore(80, '\n'); while (searchId != 999) { for (int i = 0; i <= count; i++) { inFile >> ID >> lastName >> firstName >> q1 >> q2 >> q3 >> q4 >> final; if … |
| | I am trying to create a multiplication table that is left aligned with a line under the header and a line next to the first column on the left. What I have here gives me what I want but without the lines. Can anyone help? 1. #include <iostream> 2..#include <iomanip> … |
 | Hello! I'm new here, so correct me if this is the wrong location... but I'm trying to make a program for the Minecraft server I'm on, and it requires that if someone wants to make a map that is used on the server, that there's a .xml file that shows … |
| | If I don't know the size a string will be, and if that size may change later, and if that string may contain '0' characters, what methods are there to do this? (I would prefer a professional/reliable method if possible) |
| | Hi All I am VC++ developer and trying to Automate Microsoft Outlook and got stucked at one point so need your help indeed. Expecting your reply for my question. what i want to achieve is :- I have few contacts in my application and i want to transfer them to … |
| | Anybody know what the below means. I'm building Gnuplot on Windows XP with a MinGW compiler. It could have something to do with the flags at the top of the message below but I don't know how to work that out. Error starts 8 lines down. gcc -DHAVE_CONFIG_H -I. -I.. … |
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