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25.

In C++, the range of signed integer type variable is ________(

A.	0 to 216	B.	2 to 2 1 15 15 - -
C.	2 to 2 1 7 7 - -	D.	8 0 to 2

26.

To perform stream I/O with disk files in C++, you should

A.	open and close files as in procedural languages.	B.	use classes derived from ios.
C.	use C language library functions to read and write data.	D.	include the IOSTREAM.H header file.

27.

RunTime Polymorphism is achieved by ______

A.	friend function	B.	virtual function
C.	operator overloading	D.	function overloading

28.

In C++, dynamic memory allocation is accomplished with the operator ____

A.	new	B.	this
C.	malloc( )	D.	delete

29.

If we create a file by ‘ifstream’, then the default mode of the file is

A.	ios :: out	B.	ios :: in
C.	ios :: app	D.	ios :: binary

30.

A variable defined within a block is visible

A.	from the point of definition onward in the program.	B.	from the point of definition onward in the function.
C.	from the point of definition onward in the block.	D.	throughout the function.

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