Question { 2029 }

What is a namespace in c++?

Answer

In this set of fresher-level C++ interview questions, one common topic is the concept of namespaces. Namespaces in C++ are used to organize multiple classes and functions, which simplifies application management..
The most commonly used namespace in C++ is the std namespace, which contains components of the standard library. Programmers can also create custom namespaces to encapsulate related functionality, helping to avoid name clashes in larger projects.
To access elements within a namespace, you can utilize the scope resolution operator (::) or the using directive.

Question { 2029 }

What is a namespace in c++?

Answer

In this set of fresher-level C++ interview questions, one common topic is the concept of namespaces. Namespaces in C++ are used to organize multiple classes and functions, which simplifies application management..
The most commonly used namespace in C++ is the std namespace, which contains components of the standard library. Programmers can also create custom namespaces to encapsulate related functionality, helping to avoid name clashes in larger projects.
To access elements within a namespace, you can utilize the scope resolution operator (::) or the using directive.

Question { 1172 }

What are the different types of files in linux?

Answer

• Regular files
• Directories
• Special files (character and block devices)
• Symbolic and hard links
• Named pipes
• Sockets

Question { 1580 }

What is a function in c?

Answer

A function in C++ is a collection of statements designed to accept input, perform specific computations, and produce output. The primary purpose of a function is to group tasks that are frequently executed, which helps avoid code duplication. Instead of rewriting the same code for different inputs, you can simply call the function.
In essence, a function is a block of code that executes only when it is invoked.

Question { 1522 }

What is a lambda expression in c#?

Answer

• An anonymous function introduced in C++11, defined as:
• [capture_list](parameters) -> return_type { body }

Question { 1701 }

What are the applications of c#?

Answer

C++ has numerous applications, which are frequently highlighted in C++ interview questions.
Major software companies and tech giants use C++ for various applications, including:
• Compilers: Many compilers, including those for C# and Java, are written in C++.
• Microsoft: Many Windows applications, including tools for coding and debugging, are developed using C++.
• MongoDB: This popular open-source database is written in C++ and used in web applications.
• Games and Animations: It is widely used in game development for optimizing resources and supporting multiplayer networking.
• Media Access: It is used to develop media players and manage video and audio files.

Question { 1701 }

What are the applications of c#?

Answer

C++ has numerous applications, which are frequently highlighted in C++ interview questions.
Major software companies and tech giants use C++ for various applications, including:
• Compilers: Many compilers, including those for C# and Java, are written in C++.
• Microsoft: Many Windows applications, including tools for coding and debugging, are developed using C++.
• MongoDB: This popular open-source database is written in C++ and used in web applications.
• Games and Animations: It is widely used in game development for optimizing resources and supporting multiplayer networking.
• Media Access: It is used to develop media players and manage video and audio files.

Question { 2310 }

What are the different data types present in C++?

Answer

In C++ interview questions, one common topic is the different data types available. C++ data types are broadly classified into three categories:
• Primitive: Primitive data types include fundamental types like int, float, char, and bool.
• Derived: Derived data types are more complex and include arrays, pointers, and functions.
• User-Defined: User-defined data types, such as classes, structures, and unions, allow programmers to define custom data types.

Question { 2310 }

What are the different data types present in C++?

Answer

In C++ interview questions, one common topic is the different data types available. C++ data types are broadly classified into three categories:
• Primitive: Primitive data types include fundamental types like int, float, char, and bool.
• Derived: Derived data types are more complex and include arrays, pointers, and functions.
• User-Defined: User-defined data types, such as classes, structures, and unions, allow programmers to define custom data types.

Question { 2227 }

What do you mean by call by value and call by reference?

Answer

A common topic that often appears in C++ interview questions is the difference between call by value and call by reference.
• Call by Value in C++: In the call-by-value method, function arguments are passed by copying the value of the actual parameter.
• This ensures that the original values remain unchanged since a separate copy of the value is created for the function's parameters.
• Call by Reference in C++: In the call-by-reference method, the memory address (or reference) of the actual parameter is passed to the function.
• This allows direct access to and modification of the original values.
• Both the actual and formal parameters refer to the same memory address, so any changes made to the parameters within the function are directly reflected in the original values outside the function.

Question { 2227 }

What do you mean by call by value and call by reference?

Answer

A common topic that often appears in C++ interview questions is the difference between call by value and call by reference.
• Call by Value in C++: In the call-by-value method, function arguments are passed by copying the value of the actual parameter.
• This ensures that the original values remain unchanged since a separate copy of the value is created for the function's parameters.
• Call by Reference in C++: In the call-by-reference method, the memory address (or reference) of the actual parameter is passed to the function.
• This allows direct access to and modification of the original values.
• Both the actual and formal parameters refer to the same memory address, so any changes made to the parameters within the function are directly reflected in the original values outside the function.

Question { 1428 }

How are arguments passed by value or by reference in Python?

Answer

In Python, arguments are passed by assignment, meaning that the reference to an object is passed to the function. Immutable types (like integers, strings, tuples) behave like "pass-by-value" because their content cannot be modified, while mutable types (like lists, dictionaries) behave like "pass-by-reference" because their content can be modified.

Question { 1484 }

What does the ‘#’ symbol do in Python?

Answer

The `#` symbol is used to add comments in Python. Comments are not executed and are intended to explain the code for the benefit of developers.
Example:
python
# This is a comment

Question { 861 }

Is Python object-oriented or functional programming?

Answer

Python is functional as well as object-oriented. By permitting the construction of classes and objects, encapsulation, inheritance, and polymorphism, it facilitates object-oriented programming, or OOP. Functional programming concepts like lambda expressions, list comprehensions, higher-order functions, and first-class functions are also supported by Python. Python is a multi-paradigm language because of its versatility, which allows developers to employ functional, OOP, or a combination of both approaches depending on the task.