C Plus Plus Miscellaneous - Study Mode

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[#456] What are functors in C++?

(A) Objects of a class which are treated as functions

(B) Objects that are used to call the function of other classes

(C) Functions that are called using pointer objects

(D) Functions that are called only once in a program

Correct Answer

(A) Objects of a class which are treated as functions

[#457] How many streams are automatically created when executing a program?

(A) 1

(B) 2

(C) 3

(D) 4

Correct Answer

(C) 3

[#458] What is the use of is_array() function in C++?

(A) To check if a variable is array type or not

(B) To check if a variable is 1-D array type or not

(C) To check if a variable is 2-D array type or not

(D) To check if a variable is 1-D or 2-D array type or not

Correct Answer

(A) To check if a variable is array type or not

[#459] In how many different ways any-container can be constructed?

(A) 1

(B) 2

(C) 3

(D) 4

Correct Answer

(C) 3

[#460] Identify the correct statement about throw(type).

(A) A function can throw any type of exceptions

(B) A function can throw an exception of certain type only

(C) A function can't throw any type of exception

(D) A function can catch all types of exceptions

Correct Answer

(B) A function can throw an exception of certain type only