Explore topic-wise MCQs in Technical MCQs.

This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Technical MCQs knowledge and support exam preparation. Choose a topic below to get started.

1.

Assume that the random number generating function - rand( ), returns an integer between 0 and 10000 (both inclusive). If you want to simulate the throwing of a die using this random function, use the expression

A. rand ( ) % 6
B. rand ( ) % 6 + 1
C. rand ( ) % 5 + 1
D. None of the above
E.
Answer» C. rand ( ) % 5 + 1
Discussion
2.

If a piece of code can be implemented as a macro or as an inline function, which of the following factors favour implementation as an inline function?

A. Interacting with other components (like variables in an expression), in the correct way ..
B. Flexibility to manipulate as a pointer
C. Source code size
D. Both A and B
Answer» E.
Discussion
3.

Which of the following parameter passing mechanism(s) is/are supported by C++, but not by C?

A. Pass by value
B. Pass by reference
C. Pass by value-result
D. All of the above
Answer» C. Pass by value-result
Discussion
4.

If many functions-have the same name, which of the following information, if present, will be used by the compiler to invoke the correct function to be used?

A. The operator : :
B. The return value of the function
C. Function signature
D. Both A & C
Answer» E.
Discussion
5.

The compiler identifies a virtual function to be pure

A. by the presence of the keyword pure
B. by its location in the program
C. if it is equated to 0
D. None of the above
Answer» D. None of the above
Discussion
6. 

int a =1 , b=2;        a=chg(b) ;  cout << a << b ;  If the function chg is coded as  int chg(const int &x)    {x = 10;return ();} then
35.Choose the correct statements regarding inline functions.

A. It speeds up execution
B. It slows down execution
C. It increases the code size
D. Both A and C
Answer» E.
Discussion
7. 

int a =1 , b=2;        a=chg(b) ;  cout << a << b ;  If the function chg is coded as  int chg(int &x)    {x = 10;return ();} then
34.What will be the output of the following program?

A. It results in compile-time error
B. It results in run time error
C. It prints 1 1 2
D. It prints 1 1 10
Answer» B. It results in run time error
Discussion
8. 

int a =1 , b=2;        a=chg(b) ;  cout << a << b ;  If the function chg is coded as  int chg(int x)    {x = 10;return ();} then
33.What will be the output of the following program?

A. It results in compile-time error
B. It results in run time error
C. It prints 1 1 2
D. It prints 1 1 10
Answer» E.
Discussion
9. 

        void abc(int x=0, int y, int z=0){  cout << x  << y << z;}
32.What will be the output of the following program?

A. It results in compile-time error
B. It results in run time error
C. It prints 1 1 2
D. It prints 1 1 1
Answer» D. It prints 1 1 1
Discussion