C++ Programming - OOPS Concepts - Discussion

The declaration has placed after the function made to be called then the main function compiles to be. These were the difference between the C programming and the c++ programming.

Structure/procedure-oriented programming languages like C programming language follow top-down approach. Whereas object-oriented programming languages like C++ and Java programming language follow a bottom-up approach.

The top-down approach begins with high-level design and ends with a low-level design or development. Whereas, the bottom-up approach begins with low-level design or development and ends with high-level design.

In the top-down approach, the main() function is written first and all sub-functions are called from the main function. Then, sub-functions are written based on the requirement. Whereas, in a bottom-up approach, code is developed for modules and then these modules are integrated with the main() function.

Nowadays, both approaches are combined together and followed in modern software design.

Usually, in C language, the functions are given priority than the data types. First, the main functionality of the program is discussed and then the subroutines to modularize the code into smaller parts are decided.

Hence it's called the top-down approach.

Let's take the example of the main function in C++ if we are defining a class or other functions before the main function, the execution of the program always begin with Main Function, so with this prospective, we can say C++ is a Bottom-up approach.

The declaration has placed after the function made to be called then the main function compiles to be. These were the difference between the c programming and the c++ programming.

"Approach" is a too general word, like "do", you cannot ask a question "How C++ is doing?", and provide options like top-down, bottom-up, etc.

It's just another inaccurate (by a missing essential detail), in which the word "parsing" or "compiling" should have cleared it much more. People actually answered very specific questions like "what means bottom-up parsing/compiling?" and not the question from the quiz, and probably all gave the impression that they understood the question and answered it well, but that means also that they answered it wrong: if the question is "How is C++ doing?", And you answered "bottom-up", than your answer is wrong, the right answer is "C++ is doing pretty well so far, but nobody knows what's in store for it", and this option was not provided.

Usually in C language, the functions are given priority then the data types. First the main functionality of the program is discussed and then the subroutines to modularize the code into smaller parts are decided. Hence it's called top down approach.

Guys, there is nothing related with main function. Some say that since in c++ program starts executing from main function, so C++ is a bottom up approach.

I was asked the same question in TCS interview and I had also replied the same. The result was that, they slammed me. So go on basics.

So, java and c# both follow bottom up approach, right?

Always the class should under the global region. i.e.above main.