Writing Functions with No Parameters in C++

Should we use fully qualified or unqualified references for variables and objects in our code? The influence of C's encapsulation problems on C++ and related topics.

Write a simple function template using C++ with a focus on functions, parameters, and class tenplates. Please explain the example thank you.

C++ must be 300 words  Explain functions and how to pass values using by reference and by value. Use examples (code examples) to explain the concept.

I am learning c++, and I get confused. I meet three questions, and one is asking to write a function header for a function named distance; the second question is to write the prototype for a function named distance, and the third question is to write a function call for a function named distance. I am wondering how to write different functions for these three questions? What are the differences between them? I am so confused.

Write a value function in a C++ program that has two double parameters, calculates their difference, and returns the absolute value of the difference?

Employee Paycheck in C++ Programming:

Create a function in C language that takes two integers x, and y as the parameters and returns the sum and the absolute difference of both the numbers but the return type of the function should be void. You can add extra parameters to the function but the function should not return anything and should send the required values as well. Test your function for the numbers 10, and 5 inside the main function.

Briefly describe what an "iterator" is in terms of the C++ standard library.

Is it possible to explain the importance of function creation in programming?