TutorMe homepage
Subjects
PRICING
COURSES
SIGN IN
Start Free Trial
Kartik S.
Software Development Engineer
Tutor Satisfaction Guarantee
Java Programming
TutorMe
Question:

What are the access levels allowed by default access modifier (i.e. no access modifier)?

Kartik S.
Answer:

A class member with no access modifier specified can be accessed by any class in the same package. It need not be a derived class of the containing class. These members, though, are not visible outside the package of the containing class.

Computer Science (General)
TutorMe
Question:

What is a virtual memory?

Kartik S.
Answer:

Primary memory (RAM) of a computer is limited. Many computer programs require more memory than is limited by the primary memory. Virtual memory is used in a computer to act as a primary memory, which a computer program can access. It is nothing but a part of secondary storage, which a computer program views as primary storage.

C++ Programming
TutorMe
Question:

What is the difference between pass by value and pass by reference?

Kartik S.
Answer:

Parameters to a C++ function can either be passed by value or by reference. When passed by reference, the original variable which is passed as an argument is used throughout the function. Thus, any change made to the argument in the function will persist after the function ends When passed by value, a copy of the argument variable is passed to the function. Thus, any change to the argument will not reflect in the original argument variable.

Send a message explaining your
needs and Kartik will reply soon.
Contact Kartik
Ready now? Request a lesson.
Start Session
FAQs
What is a lesson?
A lesson is virtual lesson space on our platform where you and a tutor can communicate. You'll have the option to communicate using video/audio as well as text chat. You can also upload documents, edit papers in real time and use our cutting-edge virtual whiteboard.
How do I begin a lesson?
If the tutor is currently online, you can click the "Start Session" button above. If they are offline, you can always send them a message to schedule a lesson.
Who are TutorMe tutors?
Many of our tutors are current college students or recent graduates of top-tier universities like MIT, Harvard and USC. TutorMe has thousands of top-quality tutors available to work with you.