C++ programming Questions & Answers (Compiled from UPSC, SSC ,PSC ,IBPS previous question papers)

Which among following has invalid syntax ?
#include
#include file
#include "file"
None of above

Which of the following type of class allows only one object of it to be created
Virtual class
Abstract class
Singleton class
Friend class

What is polymorphism
Ability to take more than one form
Ability to destroy destructor
Ability to create constructor
None of above

What is abstract class
Whose objects cant be created
Whose objects can be created
Depends on class
None of above

Meaning of STL
Standard Tree Library
Standard Term Library
Standard Template Library
None of above

Meaning of PDB
Physical Database File
Program Database File
Program Direct File
None of above

Stack unwinding deals with
deals with polymorphism
deals with inheritance
deals with exception handing
deals with classes

Which is not C++ storage class
auto
register
static
iostream

Default constructor has how many arguments
1
2
3
0

What is inheritance
Inheritance allows one class to reuse the state and behavior of another class.
It deals with dangling pointers
It deals with void pointers
It is type of class declaration

Reference is like a
Pointer
Structure
Array
None of above

what is a class in c++
Class in a collection of objects
Class has noting to do with object
It just have declaration of few variables
None of above

What is the meaning of base class in C++
Another class got inherit from this class
It inherit other class
It has a pointer variable
It is the first class declared

C++ programs must contain
start()
system()
main()
program()

is used for
carriage return
new line
end of the line
vertical tab

How we define our name for constants
#constant
#define
#define_constant
#constant_define

what is the size of int datatype for 32 bit system
1 byte
2 byte
4 byte
8 byte

Which operator is used for comparing two variables
:=
=
=:
==

Inline functions are invoked at
Run time
Compile time
Debug time
None of above

Which arithmetic operation can be done in pointer
Multiplication
Division
Addition
None of above

If value has not type, then the pointer pointing to this value will be known as
Empty pointer
Null pointer
Void pointer
None of above

Which type of variables can be referred from anywhere in the c++ code
All variables
Local variables
Universal variables
Global variables

Which of the following functions below can be used Allocate space for array in memory
calloc()
malloc()
realloc()
All of above

Which class has only one unique value for all the objects of class
this
friend
static
none of above

ios::ate is used for
Set the initial position at the start of the file
Set the last position at the end of the file
Set the initial position at the end of the file
Set the last position at the start of the file

Dereference operator is also called as
pointer
Reference operator
Offset operator
Deoffset operator

cout is declared in the _____ standard file within the std namespace
outstream
stdin
iostream
None of above

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C++ programming Question Answers, PSC, UPSC, IBPS, SSC Previous Papers