51,593 Topics
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| | Hello I have this problem where my text file is not read in properly to the linked list. It spits out only zeroes. Here is the code I have written. Thanks. include <iostream> #include <fstream> #include <iomanip> #include <string> using namespace std; struct widget { double R; double S; int …  |
| | #include <iostream> #include <iomanip> #include <fstream> #include "groupProj.h" using namespace std; const char Avail = '#'; const char Taken = '*'; const int r = 15; const int c = 30; char SEATS[r][c]; int main() { // Declarations for main ifstream inputPrices; double seatPrices[15]; int row; int column; double cost; …  |
 | Well Guys! I was learning how to read and write class objects from & to file respectivily. And here is a small code that i made...... As far as the code goes its all well.... And i am getting what i want.... But what i want to know is, **where …  |
| | //Bubble.h #include <iostream> #include <fstream> #include <cstdlib> using namespace std; struct nodeType { int info; nodeType *link; }; class Bubble { public: Bubble(); //constructor //deconstructor //copy constructor //operator= (overloading the = operator) friend istream & operator>> (istream &infile, Bubble & mylist); friend ostream & operator<< (ostream &outfile, const Bubble & … |
| | As you can see, I'm struggling with classes. How do I call my fraction plus(fraction second), fraction minus(fraction second), etc. functions? #include<iostream> using namespace std; class fraction { private: void reduce() //I will do this later. {} int num, denom; public: fraction() { num = 0; denom = 1; } …  |
 | I need a way to do a cast without being returned a pointer to a new address but, the same address as the original. Something like this: derivedClass something_derived; baseClass* basePointer = &something_dervived; derivedClass* derivedPointer = static_cast <derivedClass*> (basePointer); /* my problem is "derivedPointer" isnt assigned the same address as … |
 | Hey everyone, I am taking an online C++ class and part of our assignment is to complete a whole bunch of small program snipits on a site called myprogramminglab.com. This one program seems to have me stumped as I am not very familiar with Data structures. Could someone help me … |
| | I have been asked to write a coding for calculate GPA by using struct and array. I want to display the ouput for every subjects's name, subjects' code, grade for every subject and GPA for every sem but i coulds't get the ouput i want. I think i had done …  |
| | #include <iostream> #include <iomanip> #include <fstream using namespace std; const char Avail = '#'; const char Taken = '*'; const int r = 15; const int c = 30; char SEATS[r][c]; int main() { // Declarations for main ifstream inputPrices; double seatPrices[15]; int row; int column; double cost; int answer; … |
 | i have started using C++ these days. Initially , I have done coding alot in C language. I have seen that on my onliune judges , there are 2 different versions. Why they have given 2 versions to compile the code ? Can you tell ? thanks if you can … |
| | Hi, i'd like to ask for some help about a problem i got... So i got this code right now: Code: const int rows = 5; const int cols = 3; int tocke = 0; int tekmovalci[rows][cols]={{7, 6, 9}, {8, 7, 8}, {6, 9, 10}, {7, 7, 9}, {8, 8, … |
| | in this program i'm writing the functions that have qt classes as parameters Qlabel, QSpinbox, etc. are causing compile errors, my other functions work fine i get the same 2 errors for each QT object i use as an argument this is the function definition that uses QT classes as … |
| | Hello, guys i have an irritiating problem in the following function: void Sort(Point P, Point &AT50, Point &AO50){ Point AT50_new, AT50_last, AO50_new; while (P != NULL){ if (P->Age <= 50){ AT50_new = new Member; AT50_new = P; AT50_new->next = NULL; // <--from here comes the problem if (AT50 != NULL) … |
| | I have the following code that I need to figure out what the output will be. Whenever I try to run it I get an debug error - and it crashes... Somebody else said that it ran fine on their Apple machine. I just need to see what the output … |
 | Why is it compulsory and necessary to initialize static variables during compile time only? |
| | Is it possible to point to a certain index of a value? For example, int x = 2576, is it possible to do something like x[2]? I know you can do it with strings, but can you do it with numbers? |
| | I'm newbie in C++ programming and I want to declare a constructor from following code in my main however I'm completely confused about it. Here is the code: #include <vector> using namespace std; template <typename HashedObj> class HashTable { public: explicit HashTable( const HashedObj & notFound, int size = 101 …  |
| | I need to write a program (using Dev-C++) which can count the number of hyperlinks of a given web page. The main objective is to practice socket programming and try to use HTTP protocol. I am not sure exactly how to go about doing this. Can anyone help me figure … |
| | void main() { char line[300]; cout<<"enter ascii code"; cin>>line; int d = strlen(line); for(int i=0; i<d-1; i+4) { if(line[i]!='.') { (int)line[i]; (int)line[i+1]; (int)line[i+2]; int num=(line[i]-48)*100+(line[i+1]-48)*10+line[i+2]-48; cout>>(char)num; } } getch(); } ok, you enter ascii codes like 104.101.121. and the program converts this into a line like 'hey'. But there's something … |
| | hello I have the following program in which there is a switch menu and when a person enters 2 the switch menu should take to the second function which is funcTwo but it is not doind so and just gets back to the menu it self i tried switching the … |
| | Hey... I have created a prgoram in turbo c++, and i wanted it to export it as a separate file ... that is out of the bin file.. and out of all the other include file, so that it actually runs on every computer who even does not have a … |
| | How can I get this [code](http://www.mediafire.com/?o3kg3nii2sfoigh) to work? I am using xcode 4.5. Thanks |
| | Hi all I am a noob to C++ and I was getting some source code off the web and this is the second time it has happened, when I compile (Blood Shed Dev) I get a message in the compiler "permission denied" "Id returned 1 exit status" Can anybody help … |
| | Im having this weird runtime error whenever I attempt to copy a specific member of an array block. I get this from the output: ASSERT failure in QHash: "Iterating beyond end()", file tools/qhash.cpp, line 293 Invalid parameter passed to C runtime function. Invalid parameter passed to C runtime function. I … |
| | i know java c and c++ but i like java just because it was the first language i learned. i ask alot of people and they all seem to say "make game in c++" or "not a good idea to make games in java". what you guys think? should i … |
| | Hi, if we take for example 32bits: 1111 1000 0000 1000 0001 1111 1100 0000, how does it become (24bits) 1011 1110 0011 0110 1111 0110 after RLE is applied? Why/how does 1011 represent the 5 1's at the start of the 32bit number? I'm trying to understand the concept … |
| | #include <iostream> #include <cmath> #include <stdio.h> using namespace std; int main () { int n, x=0, ans; int b=0; do { x++; cout << "\nINPUT NUMBER: "; cin >> n; if(b<n) { b=n; } } while (x<=10); cout << "\n"; cout << "\nHIGHEST: " << b; system ("PAUSE"); return 0; … |
| | Hi, I want to output [chess symbols](http://en.wikipedia.org/wiki/Chess_symbols_in_Unicode) from unicode to console in c++, please tell me how to do that. Im using Dev c++, windows8 and console. Im just a beginner so please keep it simple for me (also tell me the libraries to include please) |
| | I have a client , middleware and server . The concept is a client sends a number this passes through the middleware to the server. The server checks the number against the number generated on the server side , if the client guesses the number correctly a message is then … |
| | #include<iostream> #include<vector> #include<algorithm> using namespace std; class Cords { public: int x,y,z; }; class Object:public Cords { int a,b,c; public: vector<Cords> vCords; void insertCords(); void getCords(); }; void Object::insertCords() { Cords theCords; int x=1; do { cout<<"Enter X:"<<endl; cin>>x; cout<<"Enter a b c:"<<endl; cin>>a>>b>>c; theCords.x=a; theCords.y=b; theCords.z=c; vCords.push_back(theCords); }while(x!=0); } … |
| | OK, my code is very long. But this one is a little tricky so just bare with me here guys. What my program does is generate a text file with random numbers, for eg: 123 1234 12345 123456 And the program takes in that file and puts the random data … |
| | Hi, I did a program which is dialog based application,in that i add listbox dynamically by deriving a class form CListBox class.and the list box is created in OnInitDialog() method.but when i add the listbox to the dialog using DDX_Control function it is failed to assert the listbox,because 3rd parameter … |
| | Hi, I inherit the class called ListBox form CListBox and by using this class object I create a listbox containing two items in the listbox.when ever i select the item from the listbox the generated message should be handled by the control window by using WM_CONTROL_REFLECT mesage in ListBox message … |
| | Below you will find a game I written in my spare time from college. Any and all critique welcome. I plan to expand this to a console RPG later, and eventually GUI. All in C++. BTW, nice forums. //============================================================================ // Name : Monster Shot.cpp // Author : Dave T // … |
| | hello I have the following program in which i am tring to copy one strct array to another so that i can sort the second struct array without messing up the original one so i do the copy but when i run the program it give the following error : … |
| | Im trying to write a program that simply takes a string input and reverses it. I want the program to repeat itself by asking the user then starting over. The problem im having is that when the program first runs, the getline function works correctly but then after the program … |
 | My B+ tree looks like : rest of tree / 9 10 / \ \ 5 9 10 If I need to delete 5, I can't simply remove it because the page wouldn't contain any elements after that. So, I decide to merge with the right sibling. I don't understand … |
| | Hi all, I need to make a windows application nothing fancy - just simple menu etc. However, I also need to be able to draw pixel colors to the screen (perhaps load from a bitmap image). It must be as fast and efficient as possible - and if possible, easy … |
| | **What I would like to do:** - Read data from text file - Display data from text file - Add new data to text file - Save new data to text file **The file format used is as follows:** Number of items in text file (3) Name 1 Number 1 … |
| | Hello I need to read 50 intergers from a text file and put them into an array. and output or show the user the numbers. for example: 23 73 58 49 34..... I need them to go into my array. I tried this code but it just outputs -850993. Heres … |
| | I read [here](http://www.google.co.in/url?sa=t&rct=j&q=can%20have%20any%20(odd)%20b%20tree&source=web&cd=1&ved=0CDAQFjAA&url=http%3A%2F%2Fwww.cs.uga.edu%2F~eileen%2F2720%2FNotes%2FBtrees.ppt&ei=PcK3UPy4IcbYrQe7-oC4Cw&usg=AFQjCNFC0kjGfN16J-I0S5o3HEjBUxmpKg&cad=rja) that an m-way B-Tree can have m only odd. Is that really true? I've used 2,4 trees that allow a maximum of 4 child linkages for each node (and a minimum of 2). Isn't this a 4-way B-Tree? |
| | how/where to initialize a static private std::list member ?  |
 | **my code should check if the Entered string is a palindrome or not** // stack.h typedef char comp; struct nodetype; typedef nodetype* nodeptr; class stack{ public: stack(); bool isfull()const; bool isempty()const; void push(comp elm); void pop(comp& elm); ~stack(); private: nodeptr top; }; /******************************************** stack.cpp */ #include<iostream> #include"stack.h" #include<cstddef> #include<cstdlib> #include<cstring> …  |
 | So Im creating Simple Binary Tree, not BST. Im having problem in deletewith 2 child. Method for deletion is DELETE WITH COPYING. After deleteing, when I traverse the tree, it shows run time error, **Unhandled exception at 0x008B5853 in binarytree.exe: 0xC0000005: Access violation reading location 0xFEEEFEEE.** Here is the function: … |
| | Hi, I am new to windows forms. I used the 2 lines of code below to launch a c++ code from a windows forms GUI and it worked: Dim lngReturn As Long lngReturn = Shell("c:\MyProgams\cfile.exe", vbNormalFocus) I hope someone can help with the issue below: My interface includes some text …  |
| | Ok, so currently I've been trying to recreate missile command, an old atari game. While I've had help from a group in creating the graphics for the game i.e menu, plotter class, etc. I've basically been flying solo as of the game's logic i.e missile detection, health, missiles spawning and … |
| | Hi again everyone. This is going to sound really dumb but I have to ask it because I'm not very advanced at C++. If I have a function such as **Funct(int *arg1, int *arg2)** , how do I use this function in a program. Can I just enter the values …  |
| | Hey guys, first post. I am at the end of the semester and running ito some trouble. I know this question has been askd a few months ago but I looked at the code that was supplied and it didnt work. I cant get it started, I think i can … |
| | Hello Friends, I want to write plug in in c++. I am using windows 2008 in which i choose project of Extensibility type and use C++ Atl language.I didnt find any link in the net regarding this.only theoretical help is given there. Please help me with some example so that … |
| | Hiya! I got rotating bitmaps working in my game using al_draw_rotated_bitmap(); Then i put animations in using al_draw_bitmap_region(); Ive found that i can either do one or the other. But i want it to animate and rotate. After looking at the allegro source to see what other functions are available … |
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