Global variable are available to all functions. Does there exist a mechanism by way of which it available to some and not to others

A class that builds a linked list should destroy the list in the class destructor.

With private inheritance, public and protected members of the base class become ___ members of
the derived class.

What is output?

What will be output of following program?

What will be output of the program?

What is output?

Are the following two statement same?

Lệnh cin trong C++ có tác dụng gì?

What will be output of following program?

What will be output of the program?

Chuỗi ký tự (string) là gì?

 What will be the output of the program?

Why are a function phototypes useful?

What is output? (assuming that the array begins at the location 1002 and size of an integer is 4 bytes)

What will be output when you will execute following c code?

Inheritance enables ___ which saves time in development , and encourages using previously
proven and high quality software.

Which of the following is not user define data type?

If the definition of external variable occurs in the source file before its use in a particular function, then there is no need for an extern declaration in the function

One can apply pointer arithmetic with reference variables. 

What is output of code?