what is static data member and static member function? how can we overload a function?

A static data member in C++ is a class variable that is shared among all objects of a class and is defined using the 'static' keyword. It has a single instance for the entire class, and its value is shared by all objects of that class. Unlike non-static class members, a static data member can be accessed without creating an instance of the class.

A static member function in C++ is a member function of a class that can be called without creating an instance of the class. Like static data members, a static member function operates on the class as a whole rather than on individual objects. A static member function can only access static data members on other static member functions of the same class.

To overload a function in C++, you create multiple functions with the same name but different parameter lists. The correct function to call is determined at compile-time based on the number and types of arguments passed to the function.

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Write a program using the algorithm count() to count how many elements in a container have a specified value.

Here's an example program using the count() algorithm to count the number of occurrences of a specific value in a vector container: #include <iostream> #include <vector> #include <algorithm> using namespace std; int main() { vector<int> numbers = { 2, 5, 3, 7, 8, 5, 1, 5, 4 }; // count the number of occurrences of the value 5 in the vector int count = count(numbers.begin(), numbers.end(), 5); cout << "The number of occurrences of 5 in the vector is: " << count << endl; return 0; } Output: The number of occurrences of 5 in the vector is: 3 Explanation: The program starts by creating a vector named numbers that contains several integer values. The count() algorithm is used to count the number of occurrences of the value 5 in the numbers vector. The function takes three arguments: the beginning and end iterators of...

What are Stub and Skeleton in Distributed Application? Explain its function with block diagram.

Stub and Skeleton are two important components of distributed applications. A distributed application is a software system that runs on multiple computers connected through a network. It allows users to access resources and services on different computers as if they were on a local computer. In a distributed application, a client program on one computer sends a request to a server program on another computer. The server program processes the request and sends a response back to the client program. Stub and Skeleton help to facilitate this communication between the client and server programs. A Stub is a client-side proxy that represents the remote object on the client machine. It acts as a gateway for the client to communicate with the server. When a client invokes a method on the Stub, it marshals the arguments and sends them to the server over the network. The Stub then waits for the server to send a response. When the response is received, the Stub unmarshals the data and retur...

Explain the lifecycle of Servlet with block diagram.

The lifecycle of a Servlet can be divided into several stages. Here's a block diagram that illustrates the different stages: Servlet API: The Servlet API provides a standard set of interfaces and classes for creating and interacting with Servlets. It is typically included in the web application's classpath as a JAR file. Servlet Container: The Servlet Container is a web server or application server that implements the Servlet API. It provides a runtime environment for executing Servlets and manages their lifecycle. Servlet Class: The Servlet Class is the Java class that implements the javax.servlet.Servlet interface. It contains the logic for processing HTTP requests and generating HTTP responses. init(): The init() method is called once when the Servlet is first loaded by the Servlet Container. It is used for initialization tasks, such as setting up database connections, loading configuration settings, or initializing other resources that will be used by the Servlet. service(...

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