51,593 Topics
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| | hi , i have a very simple Family tree project using GUI..... and i have two forms ! the first form ask the user to enter the number of child the parent have then in the 2nd form there will be a box as the number of child like when … |
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| | hi everyone, i need some help. This is my problem. When I input a string to the program, I want the screen console print out '*'. ex: string s; cout<<"password :"; getline(cin,s); when i type "abc123" for the password. The screen console will show "******". I'm sorry about my poor …  |
| | i was reading a book and came across this line "C++ matches a pointer of any other type with type void * and prints a numeric representation of the address. If you want the address of the string, you have to type cast it to another type," please any one … |
| | when converting iget erros especially in the cin parts because they are automatically passed by something #include<iostream> #include<conio.h> #include<math.h> using namespace std; int p=1; class Bank { public: char name[50],address[90],type; double ein_betrag, aus_betrag; double balance; int costumernr, accountnr, birth, tel; public: void newcostumer(); void newaccount(); void costumerdel(); void accountdel(); void …  |
| | I am writing a class that uses different policies stored in classes I want to declare this class by simply selecting the policies by writing `my_great_class<policy45, policy22, policy12>` (There can be a varying number of policies) which would translate automatically into: struct empty_class{}; struct policy12: empty_class{ // code... }; struct … |
| | A.3 Car rental 3 This program is for a car rental agency. Your program will have to compute the total cost of a rental. This agency has two types of cars, and the rates per day are as follows: All cars come with a basic insurance that covers damage to …  |
| | I'm having trouble displying the contents of a queue. When I pop the queue here: for( int i = 0; i < diskQueue.size() + 1; i++ ) { cout << left << setw(0) << "--d" << i+1 << left << setw(4) << " " << left << setw(14) << diskQueue.front().getFilename() … |
| | Hi! This is just an example code: #include<iostream> using namespace std; int& example() { int a=5; return &a; } int main() { cout << example(); } But I'm getting this error: Error: invalid initialization of non-const reference of type 'int&' from an rvalue of type 'int\*' |
 | I am writing a program to input data from a file, format it and then output to another file. For some reason when i make the file I get this error: ----jGRASP exec: make g++ -ggdb -c Billionaire.cpp iostream:39:0, from Billionaire.cpp:7: c:\mingw\lib\gcc\mingw32\4.8.1\include\c++\ostream: In constructor 'Billionaire::Billionaire()': ostream:384:7: error: 'std::basic_ostream<_CharT, _Traits>::basic_ostream() [with … |
| | Hi. Can someone explain why this isn't working? #include <iostream> #include <list> #include <string> #include <iomanip> using namespace std; /** * Global Variables */ int printer; int disk; int cd; int num; int pmem, plen; int dmem, dlen; int cmem, clen; class PCB { public: PCB() : pid( 0 ), … |
| | Hi. I'm trying to access some data in a List using an Iterator, but I'm getting an error message: #include <iostream> #include <list> #include <string> #include <iomanip> using namespace std; /** * Global Variables */ int printer; int disk; int cd; int num; string k; int pmem, plen; int dmem, … |
 | this code was error.please help me fix it include <iostream> include <conio.h> include <algorithm> using namespace std; int a[]={1,5,7,4,9,8}; BST*binary_search_tree; struct BST{ int value; BST* left; BST* right; }; int search_bst(BST* node,int key){ if(node==NULL) return -1; if(key<node->value) return search_bst(node->left,key); if(key>node->value) return search_bst(node->right,key); else return node->value; } void insert_bst(BST* &treeNode,BST* newNode){ … |
| | Hi. Can someone tell me why the following code is giving me an error message? Thank you. #include <iostream> #include <list> #include <string> #include <iomanip> using namespace std; /** * Global Variables */ int printer; int disk; int cd; int num; string k; int pmem, plen; int dmem, dlen; int … |
| | Hello I have to do a sorted list code according to some instructions. a friend and I worked on this, and we pretty much ended up with the same code, his worked, but mine isnt, even though its exactly same! I have been trying for hours figuring how to make … |
 | Write a program that reads an MxN matrix A and prints its elements in spiral order. You should start from the element in the 0th row and 0th column in the matrix and proceed in a spiral order as shown below. 1→ 2→3→ 4 ↓ 5→ 6→ 7 8 ↑ … |
| | create a code that will read a file for an input which is a matrix,(rows and columns of the integers) and be able to output the transpose of it. original matrix 3X4 transpose matrix 4X3 1 2 3 4 1 5 9 5 6 7 8 2 6 0 9 … |
| | Write a C++ program that would display the menu of a restaurant and will accept orders, compute for the total amount and compute for customer change after entering the given cash. The program should be looping and will end once the user answers No to the question: Another Customer (Y …  |
 | here are my codes: #ifndef STUDENT_H #define STUDENT_H class student { public: void enterDetails(); void enterModule(); void displayDetails(); private: char name[100]; char studID[100]; char address[100]; char module[100]; }; #endif i want to add a 2d array "M[row][col]" in my class but i don't know how to do it anyone help? |
 | please help me in this program codes please... im in rush |
| | guys help with this. sorry about my post earlier. im just new here in daniweb comm. i dont know the rules yet. i have a problem . i don't know the correct equation for this one. i don't get the correct answer .please help. amount=amount+price*quant; is this correct? #include<iostream> #include … |
| | Write a program that does the following: Asks the user to enter an integer Prints the integer in Roman numerals 1.) Asks the user if they'd like to convert another integer 2.) If the user enters 'n' or 'N': end the program (return 0;) 3.) If the user enters anything … |
 | void StrVec::free() { if (elements) { for_each(elements, first_free, [this] (std::string* p) { alloc.destroy(p); }); alloc.deallocate(elements, cap - elements); } } produced this error: [Cruel Error :(](http://s3.postimg.org/4p1vfhs9f/New_Bitmap_Image.png) it was the second compiling error, if I removed the pointer, it will produced the first one. which is kind of -.-" so, I …  |
| | 1. Ask the User for his or her name. 2. Display a Menu asking the user. a. Would you Like To Print all of the prime numbers from 3... N? b. Would you like to quit this program? 3. If the User selects to print the prime numbers. Ask for … |
 | Hi there, I am interested in qt creator version 5.01 by using c++. Is there any simple manufacturing problem example that can be done by using this software? Just a sample enough for me. Thank you  |
| | My code right now: std::string line; std::fstream localFile; localINIFile.open(MyToReadFile/*, std::ios::in || std::ios::out*/); // the MyToReadFile is declared somewhere else, and is being declared before this if (localFile.is_open()) { std::string Name = A[ID]; // ID is delcared somewhere else too std::string lookFor = Name + " false"; while ( getline (localFile,line) … |
 | Perhaps mt eyes are missing something simple, but I cannot understand what is going on. The following code produces intellisense and compile error "error C2373: 'GetHwnd' : redefinition; different type modifiers" I have many functions in same manner, but this will not play ball. extern "C" HWND __stdcall GetHwnd(wchar_t *); … |
 | How to save the created txt file to a specified path? For example to C:\\ Drive. When the code creates a file it saves to the workspace folder of the project. Do I have to set the directory to C:\\? I tried using `SetCurrentDirectoryA` function but does not change to … |
| | Write a program to recognize tokens for C++ program. Use C++ program as your input?How to answer? TOKEN getRelop() // TOKEN has two components TOKEN retToken = new(RELOP); // First component set here while (true) switch(state) case 0: c = nextChar(); if (c == '<') state = 1; else if … |
 | Hello, I'm developing an application in Unity/C#, a social application, where you can meet friends, post messages, chat, and so on. I'm not calling this a "game" because I intend this to be something where you don't need to shoot, or destroy, or earn money, or all other game stuff. … |
 | Hello, I googled this and didn't found any good results. I found "GUI Toolkits for C++"... I need a C++ eBook to teach me to use the windows library... |
| | vector <int> a; //first vector vector <int> b; //second vector vector <int>::iterator i; //iterator for first vector vector <int>::iterator i1; //iterator for second vector //reading of first vector int temp; while(cin>>temp) { a.push_back(temp); } i=a.begin(); while(i!=a.end()) { cout<<*i<<" "; i++; } //end of reading first vector //reading of second vector …  |
| | for(i=a.begin();i!=a.end();i++) { cin>>*i; } for(i=a.begin();i!=a.end();i++) { cout<<*i; } above code works fine but when i use while loop to display vector , program crash. while(i!=a.end();) { cout<<*i; i++; } |
| | I'm new here, and haven't posted anywhere for any help since I've been all about learning for myself. However, I've gotten to the point where I don't want to fail this class so I'm seeking as much help as I can! I don't want it done for me, just a … |
| | need new "c++ database" books or tutorial sites |
 | Hello, I feel like this is probably something silly, but for some reason if I declare a variable at a certain point in my code, then never use it... it crashes. This is literally what happens: //... code here int isBuf=0;//one of my variables int zeroAddr=0;//<-- another variable I want, … |
| | Hello, I heard that microsoft is planning to make an AoT (Ahead-of-Time) Compiler for the C# so it can compile it to a native code instead of the IL... My question is, When will this compiler be available? |
| | I need help with finding the sum of only 1 row and 1 column in a 2D array. I have loops working inside int main() that show the sum of all the rows and all the columns but what I need is a function to sum only one row and … |
| | it's a beginner's problem. I am trying to calculate sum of the first 15 factorials. I know int isn't large enough for the sum, so I used unsigned long long but it still didn't work. why?? Thanks for helping! #include <iostream> #include <cmath> #include <iomanip> #include <cstring> using namespace std; … |
| | Hi, guys, I need some help to figure out how to get my program working. Program description: The purpose of this program is to all the user to input names of city and their (x, y) coordinates on a 2D map. Once more than 2 different cities are entered, the … |
| | can anyone explain to me the realation between these classes * Win32_DiskDrive * Win32_LogicalDisk * Win32_Volume * Win32_DiskPartition |
 | I am using Visual Studio 2013. Error in structure... syntax error : missing ';' before '<<' unexpected token(s) preceding ';' #include "stdafx.h" #include "iostream" #include "fstream" #include "string" #include "conio.h" using namespace std; struct input { char f_name[13]; char l_name[13]; char gender[6]; char section; int age; cout << "Enter Your … |
 | I want to be a programmer but I don't even know where to start. I have read about what computer programming can be used for and what it does but I have no idea about how to start. |
| | How can i measure sequential read/write speeds? is there any API, library that can help me? |
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| | I want access data randomly and i have write the code when i click the button then data is displayed but i want when i again click the button then the next row data is displayed. could you please tell i am stuck here past 15 days.please And when click … |
| | how to come up with a code to class queue and circular queue |
| | I have a c++ game that i made and i was wondering how i would make it so that i could add graphics, or just use the same basic concept of the game and just put those into a fresh game that i make with graphics. well my question is …  |
| | Hi. I wonder why this doesn't work. I expected to see ch1 and ch3 are numbers but it shows they are operators.... How can I make this work? #include <iostream> using namespace std; void isItNumber( char *ch ) { if( strcmp( ch, "*" ) || strcmp( ch, "/" ) || … |
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