[c++] Forum Topics

Hello everybody. I'm trying to write program with vectors and iterators. Coordinates X and Y are entered from keyboard (as structure) and placed in vector of points. It's necessary to display coordinates with maximal X and Y. This code was compiled but not display maximal X. What should I change? …

I've been dealing with this problem for about 2 days now. Write a program that accepts the price of an item and displays the discounted price. Accept also the amount given by the customer (assume the amount is greater than or equal to the discounted price) and display the change. …

Okay guys, I am having a problem with this code. I really need help with this one because I am stuck. The problem with this question is that the name, ss, id, and pass have to be ONE STRING. It's stupid because I wish I could make the strings split …

Hi, i have a program in qml with qtmultimedia 5.0. in the program i use media player and videooutput. when i refrenced media player 's source by a .mov file. it can't play the file. what's the problem? note: my .mov video files have size 5760 * 1080

[ATTACH=RIGHT]17428[/ATTACH]Almost every programmer knows his name. He's a living legend in computers. His name is Bjarne Stroustrup, and he created the world's most popular programming language, C++. I had a chance to ask him a few questions. The first three of the questions I came up with, and the remainder …

Create a C++ program that will allow the user to enter the number(x) to be used as maximum value of loop. //display the square, square root, sin , cos, log and log10 of the number 1 to x.ls)

Okay, I have another problem. It has nothing to do with the file I/O streams. But I want to make modifications with this code. It works but I would like to make changes though. PLEASE NOTHING TOO FANCY, I'm still a beginner. Thank you for the help! Write a function, …

Hi, this might be kidish to people over here , am trying to migrate code from c++ to C# where am new to CPP , so guys please help me out what this below code exactly mean . int myFunc (int a, int b)=0; Thanks for your time .

Hello programmers! I am having a function that has the user enter a name for an object, check if its valid, and return it if it is. I am getting the input via getline, but it seems that you have to press enter twice to make the input work. Here's …

Design a C++ program by considering the following conditions; 1. User must keyed-in “start” to start the program and “stop” to end the program. . 2. If the user keyed-in “choice1”, print out PATTERN A. 3. If the user keyed-in “choice2”, print out PATTERN B. Use if else statement, while …

Hi All, Private data in a class can only be accessed by getter functions. If I have a class as the private data in another class, in another class...Example: class Top { private: class Middle { private: class Bottom { private: int number; } } } If I want to …

I want count the elements in a srand generated array. The array is char array. Can anyone advise me on my void countElements (char* a, int size) function as it don't work? TIA. [CODE] #include <iostream> #include <ctime> #include <cstring> #include <cstdlib> using namespace std; const int MAX = 10; …

Hi All, I have demodulated two AM files (I/Q) succesfully but for one of the I/Q files which was Gnuradio (USRP) file i had to scale down I and Q components before demodulation by multiplying by 0.0001 (experimental value) to get the value that can be demodulated and heard on …

This is my first time working with C++ and I have put together this program and came up with two errors and I am unsure what it is wanting me to do. The errors I got are: 1>c:\users\owner\documents\visual studio 2010\projects\week5\week5\passing_by_value.cpp(30): error C2064: term does not evaluate to a function taking …

My client and server below can be run in seperate terminals an can see each others connections, but always send only 0 bytes. Cannot figure out why. Both scripts are g++ compilable so you can see what I mean. Run ./server in one terminal and ./client 127.0.0.1 test in the …

Okay, so I was given this problem for my assignment, and I was wondering if I have completed the tasks the question asks. I would also like to know how I can improve this code as well. Please nothing too fancy as I have just learned arrays. Question: Write a …

Design and develop a school timetable application for a school of your choice.The application should work with a database that has information on teachers,classes, subjects and departments in the school.The application should generate a teaching timetable in a well structured format. There should be a title line with year and …

Hi, I am trying to design a vector within a vector within a vector. For example, a school has 3 floors, each floor has 5 classrooms, each classroom has 20 students, each student has a last name and a first name. I know how to create a vector for floors …

I have this simple program in which I want to concatenate two char pointers using memcpy, but I get access violation writing location on the memcpy line. Why is this happening and what could be done to make it work? Thanks. char *first = new char[20], *second="world!"; printf("first: "); scanf("%s",&first); …

I need an advanced resourse about C++ GUI. thanks...

Hello programmers! I have been working on a hardware store application, where there is a `HardwareRecord`class that stores information about each object in a store (ex: nuts, bolts, screws, and so forth). Here's my declaration of this class: // HardwareRecord.h // Initialize Hardware Store File // // // Definition of …

Hi, I m facing some trouble in c++? I want to know how to write equivalent c++ statement from these c codes struct stat sb; // this is struct, will be same in c++ printf("I-NODE NUMBER: %ld\n", (long) sb.st_ino); // this is C statement // c++ statement of above statement …

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I am writing a program for date class, but facing an error in definition of constructor. I am pasting my code below: Note: i am using compiler devC++ 4.9.2.2 and not need to add 'using namespace ' in this compiler. If you a using other compiler then you have to …

Hello to all! I am a begginer to C++ and writing a class . Actually my program runs perfectly but there is logical error. My compiler is devC++. the output of my program should be as follows: Enter your name: john Enter your rollno: 45 Enter your semester:4 Enter your …

Hey guys, I need help with another one of those I/O File coding. I am super clueless and this is what I have so far: /*Write a program that merges the numbers in two files and writes all the numbers into a third file. Your program takes input from two …

please help me i need to make a program to calcutale the grade of a student with a prelim = 20% midterm = 20% prelfinal = 20% final = 40% ` = 100 %`

using namespace std; struct karmand{ char nam[10]; char shomare[10]; char sx[10]; char mm[10]; char rgh[10]; }list[s]; void search(); void prin(int i); void input_file(); void enter(); int a; void menu_select(){ char p[10]; int c; system("cls"); printf("1)enter a record:\n"); printf("2)sort the file:\n"); printf("3)search the file:\n"); printf("4)quit:\n"); do{ printf("please enter your choice:"); gets(p); …

Hello All, long time no see, I'm seeking for websites that provides practices of C++ and Java examples for programming students, the idea is to give me a programming question to solve in order to train myself. thanks.

**The special rules for inline functions require that they be defined in each file in which they are used.The easiest way to make sure that inline definitions are available to all files in a multifile program is to include the inline definition in the same header file in which the …