Hierarchy of object oriented program execution

[ECE07]

Hi, I have a very basic question about the execution of object oriented program execution. In any OOP language, I know that the program enters in and begins at "main". From there, I am a little confused on how it executes. In simple machine language code, the program executes sequentially, line by line. So how does object-oriented code run?

For example, say I had a program structured the following way:

main()

initialization

void method 1()

void method 2()

Are these methods simultaneously running after some initialization, and which one executes depending on what i/o is happening in the code?

[Disch]

OOP is a design paradigm. It does not change the rules of how the languages operates. C++ still runs line-by-line, regardless of whether or not you are using OOP.

When you call a function from main... main's execution stops and the function's execution starts. Once that function returns, then main's execution begins again right where it left off.