49,761 Topics
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 | hello i would like to know how to get one spot correct in keno. meaning get one number correct. is there a trick to it. i know i have to watch the pattern. but anything else. masslottery.com. thanks rehana vaidya  |
| | I have a microcontroller-based widget connected to my home network that monitors some sensors and controls the garage door. I'd like for it to work one way if I'm home and a different way if I'm not home. It could determine if I'm home by looking for my cell phone …  |
 | So I've been trying to make a circle class that can calculate the Area, Diameter, and Circumference of a circle. I wish to be able to do this so I can easily just input the raidus in my main and print the values out. I tried making a friend function, … |
| | Dear friends: I downloaded the C++ Mathematical Expression Library from the web, and i uploaded it in the attachment. It consists of only one head file. But the compiling process is very slow under opensuse 42.3 with gcc. Could you please give me some advices for that. Regards.  |
| | I'm writing a code that will save the username of a user when a button (in this case button1) gets pressed. I save it to a file called info.txt, and i use fstream in order to save it. Currently I'm running into the issue that, while i can open up … |
| | Hi! I am an engineering student.I was exploring the conio.h file in c++ when i encountered inp(),outp() functions. I understood the basics about them but i am still not able to create a meaningful program with it.Somebody please help me !  |
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| | Since OpenGL uses the strange system of 1s and 0s to represent location on the screen, I'm trying to figure out how to switch it to standard x, y coordinates like those that are used on a graph. And so far, my searches on the rest of the internet have … |
| | So I'm trying to convert my code into 3 files, the main.cpp, a header, and the classbody.cpp. This was my original code: #include <iostream> using namespace std; #include <string> #include <ctime> #include <stdio.h> #include <stdlib.h> class colorPicker { private: string colorArray[7]; public: colorPicker() { colorArray[0] = "Red"; colorArray[1] = "Green"; …  |
 | Hello all, I need your help. I trying to change the font of texts displayed in the output of my program. I know that we can use settextstyle() for changing fonts. But there are only four types of fonts( GOTHIC, SANS SERIFF , TRIPLEX , DEFAULT) available. I want to …  |
| | Write the C program that solve the quadratic equation problem The output should appear as follows: Enter A: 3 Enter B: 5 Enter C: 2 There are two solutions: -0.666667 and -1. Press any key to continue_ thank you,  |
| | I am parsing below sample file in below code snippet. {"requestType":"INVOCATION", "hostName":"localhost", "serviceName":"bucky", "serviceType":"DISCRETE", "serviceParameters":"sampleData", "servicesList" :[ { "serviceName" : "ABC", "serviceParameters" : {"para1" : "value1", "para2" : "value2", "para3" : "value3"} }, {"serviceName" : "CBA", "serviceParameters" : { "para1" : "value90", "para2" : "value", "para3" : "value"} } ], … |
| | Hi all few free tutorial sites for beginners are given below. C PROGRAMMING http://learnermode.com/c-tutorial/ C++ pROGRAMMING http://cplusplus.com Java https://docs.oracle.com/javase/tutorial/ C# https://msdn.microsoft.com/en-us/library/aa288436(v=vs.71).aspx Python https://www.tutorialspoint.com/python/ Java Applets http://learnermode.com/java-tutorial/applets/  |
| | I'm not quite sure the difference between strcmp and == operator when comparing 2 different strings, I was told to do this but == works as well with less typing. [code=C++] if ((strcmp (a, b[i]) == 0)) { someMethod(); } else someOtherMethod(); _______________________________ if (a==b)) { someMethod(); } else someOtherMethod();[/code] …  |
| | a program wherein you input a 8 character string..and then validate if its a valid identifier..a valid identifier is a string that starts with an alphabet and underscore(_)..invalid identifier starts with a number and a double underscore(__)  |
 | Hello everyone, I'm working on a card trick program that essentially has the user pick a card and the program will figure out which card it is. However, When I get the the displayed cards, I get some results that have no value and some that are not alligned properly. … |
| | I'm a beginner in C++. I saw \b and \r in a program source code. I've seen \n and I know its purpose. But why do we use \r and \b in C++? Please clear my doubt. Thank You.  |
| | hi there, I'm coding in windows, c++, but when I traslate my code to ubuntu, g++, I get this error: [B]lvalue required as left operand of assigment[/B] This is the line where I get the error: [COLOR="Red"][/COLOR][CODE]&*raiz=&*p;[/CODE] What could be the problem? *raiz and *p are pointers to an avl … |
 | The purpose of the program is to store values in array from a file salesData.txt which contains the values as shown below. The program should stop at the sentinel value that is 0.0. The code is not working as expected. . This is the question. Create a program that reads … |
| | Hi, Currently writing a NFC program (Windows 7-->VC++ MFC ). The reader is connected via USB and when i run the exe, i manually select and connect the reader for the exe to work. my requirement is 1. In the code, identify the wireless network and if my particular reader …  |
 | Hello, I was wondering if it was possible to create a software like visual studio (in addition simple, obviously). We could program in vb.net, c ++, etc.  |
| | Hi everyone, This might be a very stupid question to ask and the answer might be very simple but I was just curious to know this. How to display "\n" on output screen in C++? We all know \n is used to enter a new line. But what if I … |
| | In below code while compiling i am getting error , Error : main.cpp:8:57: error: expected type-specifier before ‘Staircase’ std::unique_ptr algodiagnostic (new Staircase()); compilation command g++ HardwareDiagnostic.cpp HardwareDiagnostic.h main.cpp -std=c++0x -o res it works fine if compile entire code in single file without creating header file and main.cpp separately. Can anybody …  |
 | i wrote a code that will asks the user to enter a sentence and store the string in a dynamic array. copy the content of the old dynamic array into the new dynamic array and the while loop keeps going and asks the user to enter something new again and … |
 | #include<iostream> using namespace std; main() { int numGame,numSocks,numShoes; int countX = 1,countY = 0; float tempGame = 0,tempSocks = 0,tempShoes = 0,GrandTotal = 0; float totalP,priceGame,priceSocks,priceShoes; cout<<"Welcome to Numbani Bowling Arena Transaction System.\n"; cout<<"Please fill in the required sections below.\n"; cout<<"---------------------------------------------------------\n"; while( countX > -1 ) { countY = countY …  |
 | Hi all, I'm a very early user of Daniweb, and after a long break, and I'm hoping to participate a bit more in this forum again. I'm here specifically for some advice before starting a new project of mine. I'm an experienced C++ / Win32 developer, but seem to be … |
 | guys please help me i have an assignment to register students in c++ with the following first name middle name last name id sex age year section the id have to be sorted include chapters interactive with user thanks!  |
| | I have been trying to compile this code but all my attempts failed, can someone please explain to me what's the meaning of randvar in this code: int upper_range = 255; for(int i=0; i<256; i++){ upper_range -= i; int delete_list_entry(temp_head, randvar); }  |
 | Using function write a program to take two arrays of integer numbers and multiply each corresponding values and put the result in a third array. |
| | This program should calcuLate users amount of watts consumed based on their appliances and the aprroximate number of hours each appliance is used in a day, week or month. The basic requirements are as follows: Give user option of selecting predefined home appliances or entering their own and corresponding watts …  |
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