Deck 3: C++ Programming Concepts

Question 1

Empty parentheses following a function name in a function prototype indicate that the function does not require any parameters to perform its task.

Answer 1

True

Question 2

C++ programmers concentrate on creating , which contain data members and the member functions that manipulate those data members and provide services to clients.

A)structures
B)classes
C)objects
D)function

Answer 2

classes

Question 3

Which of the following is FALSE about references in C++

A)a reference must be initialized when declared
B)once a reference is created, it cannot be later made to reference another object; it cannot be reset
C)references cannot be null
D)references cannot refer to constant value

Answer 3

references cannot refer to constant value

Question 4

What will be the output of following program?#include <iostream> using namespace std;class Test{public:Test() { cout <<"Hello from Test() "; }} a;int main(){cout <<"Main Started "; return 0;}

A)main started
B)main started hello from test()
C)hello from test() main started
D)compiler error: global objects are not allowed

Question 5

Which of the following is true about constructors.
1) They cannot be virtual.
2) They cannot be private.
3) They are automatically called by new operator

A)all 1, 2, and 3
B)only 1 and 3
C)only 1 and 2
D)only 2 and 3

Question 6

Which of the following operators are overloaded by default by the compiler?
1) Comparison Operator ( == )
2) Assignment Operator ( = )

A)both 1 and 2
B)only 1
C)only 2
D)none of the two

Question 7

Which of the following is true about inline functions and macros.

A)inline functions do type checking for parameters, macros don't
B)macros cannot have return statement, inline functions can
C)macros are processed by pre-processor and inline functions are processed in later stages of compilation.
D)all of the above

Question 8

In C++, const qualifier can be applied to?Member functions of a class?Function arguments?To a class data member which is declared as static?Reference variables

A)only 1, 2 and 3
B)only 1, 2 and 4
C)all of the above
D)only 1, 3 and 4

Question 9

Which type is best suited to represent the logical values?

A)integer
B)boolean
C)character
D)all of the mentioned

Question 10

The following is the C++ style comment

A)//
B)/*..*/
C)-
D)none of above

Question 11

Which of the following statements is false?

A)every c++ program must have a main().
B)in c++, white spaces and carriage returns are ignored by the compiler.
C)c++ statements terminate with semicolon.
D)main() terminates with semicolon.

Question 12

Functions can returns

A)arrays
B)references
C)objects
D)all of above

Question 13

Which of the following control expressions are valid for an if statement?

A)an integer expression
B)a boolean expression
C)either a or b
D)neither a nor b

Question 14

What will be the values of x, m and n after execution of the following statements? Int x, m, n;m=10; n=15;x= ++m + n++;

A)x=25, m=10, n=15
B)x=27, m=10, n=15
C)x=26, m=11, n=16
D)x=27, m=11, n=16

Question 15

Which of the following approach is adapted by C++?

A)top-down
B)bottom-up
C)right-left
D)left-right

Question 16

Which of the following is the correct class of the object cout?

A)iostream
B)istream
C)ostream
D)ifstream

Question 17

Which of the following functions are performed by a constructor?

A)construct a new class
B)construct a new object
C)construct a new function
D)initialize objects

Question 18

Which of the following ways are legal to access a class data member using this pointer?

A)this->x
B)this.x
C)*this.x
D)*this-x

Question 19

Which operator is having right to left associativity in the following?

A)array subscripting
B)function call
C)addition and subtraction
D)type cast

Question 20

Which operator is having the highest precedence?

A)postfix
B)unary
C)shift
D)equality

Question 21

#include <iostream> using namespace std; int main(){int a;a = 5 + 3 * 5;cout <<a; return 0;}

A)35
B)20
C)25
D)30

Question 22

In procedural programming the focus in on …...........

A)data
B)structure
C)function
D)pointers

Question 23

In object oriented programming the focus is on ….......

A)data
B)structure
C)function
D)pointers

Question 24

Which of the following feature of procedure oriented program is false?

A)makes use of bottom up approach
B)functions share global data
C)the most fundamental unit of program is function
D)all of these

Question 25

Which of the following feature of object oriented program is false?

A)data and functions can be added easily
B)data can be hidden from outside world
C)object can communicate with each other
D)the focus is on procedures