Abstraction is a process by which higher concepts are derived from the usage and classification of literal ("real" or "concrete") concepts, first principles and/or other abstractions.
println is not a C++ keyword.
No. Both C and C++ are low- to mid-level languages while MATLAB is a high-level language. The level determines the amount of abstraction involved, and the higher the amount of abstraction, the easier a language is to use. Knowledge of another language is never a bad thing though. The more languages you are familiar with, the more easily you can determine which language is best suited to a particular solution.
Data abstraction is a design concept, whereby interfaces and implementations are kept separate. That is, it should not be necessary to know how an object works in order to use it. The interface provides all you need to know. This reflects much of real life. When watching TV, you have a remote control which allows you to select a channel, but it is not necessary to know how the TV receives and processes radio signals, nor how it separates one channel from another. Those are implementation details that are only of concern to TV engineers. In C++, there are no statements as such to implement data abstraction. You achieve it by designing a public interface which is accessible to normal users, and a private interface that is only accessible to the class designer.
If you mean the original name of C++, it was originally called "C with Classes". However, after the introduction of template metaprogramming, it was renamed C++ which meant "the successor to C".
Java is considerably more convenient than either C or C++ due to its extremely high level of abstraction. However, that convenience comes at the cost of both performance and efficiency.
println is not a C++ keyword.
The concepts of OOP in C++ are the same as for OOP in any other programming language: abstraction, encapsulation, inheritance and polymorphism.
In computer terms there is no difference. The difference is only in the high-level abstraction which is only of relevance to programmers, and of no relevance to computers. The resulting machine code is the same for any given program, the only real difference being how the code is optimised. Ultimately, C and C++ are merely tools to produce machine code programs -- they just achieve it in different ways. That is, anything you can do with C++ you can also do with C, it just requires more effort because of the reduced abstraction in C. By the same token, anything you can do in C you can also do in assembly language, which has the lowest level of abstraction.
No. Both C and C++ are low- to mid-level languages while MATLAB is a high-level language. The level determines the amount of abstraction involved, and the higher the amount of abstraction, the easier a language is to use. Knowledge of another language is never a bad thing though. The more languages you are familiar with, the more easily you can determine which language is best suited to a particular solution.
Data abstraction is a design concept, whereby interfaces and implementations are kept separate. That is, it should not be necessary to know how an object works in order to use it. The interface provides all you need to know. This reflects much of real life. When watching TV, you have a remote control which allows you to select a channel, but it is not necessary to know how the TV receives and processes radio signals, nor how it separates one channel from another. Those are implementation details that are only of concern to TV engineers. In C++, there are no statements as such to implement data abstraction. You achieve it by designing a public interface which is accessible to normal users, and a private interface that is only accessible to the class designer.
If you mean the original name of C++, it was originally called "C with Classes". However, after the introduction of template metaprogramming, it was renamed C++ which meant "the successor to C".
Java is considerably more convenient than either C or C++ due to its extremely high level of abstraction. However, that convenience comes at the cost of both performance and efficiency.
Abstraction means that all information exist but only the relevent information is provided to the user. Encapsulation assists abstraction by providing a mean of suppressing the non-essential details.
because c++ supports all the basic concepts of oop :1.objects,2.classes,3.data abstraction and encapsulation,4.inheritance,5.polymorphism,6.dynamic binding,5.message passing.
'int' is one of the built-in data-types, it is meant to hold integer values.
C++ compiles to native machine code whereas Java compiles to byte code which must run within the Java Virtual Machine. The extra layer of abstraction means that, comparing like for like, a C++ program will easily outperform its Java equivalent. Thus C++ is easily the faster of the two.
C++ endeavours to represent the object oriented programming paradigm through the use of classes. The four main pillars of OOP are encapsulation, inheritance, polymorphism and abstraction, which C++ primarily achieves through the use of classes, class hierarchies, virtual methods and templates.