C++ MCQs with answers Page - 148

Here, you will find a collection of MCQ questions on C++. Go through these questions to enhance your preparation for upcoming examinations and interviews.

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Q. Which of the following is the correct way to define a destructor in a derived class in C++?

(A) ~DerivedClass() { }
(B) void ~DerivedClass() { }
(C) int ~DerivedClass() { }
(D) None of the above

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Q. What is the output of the following code snippet? int x = 10; int y = 20; cout << (x >> 1);

(A) 5
(B) 10
(C) 20
(D) Error

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Q. Which of the following is the correct way to define a function pointer in C++?

(A) int (*ptr)(int, int);
(B) int *ptr(int, int);
(C) int ptr(int, int);
(D) None of the above

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Q. What is the output of the following code snippet? int x = 10; int y = 20; cout << (x && y);

(A) 0
(B) 1
(C) 10
(D) 20

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Q. Which of the following is the correct way to define a union in C++?

(A) union MyUnion { int x; float y; };
(B) struct MyUnion { int x; float y; };
(C) class MyUnion { int x; float y; };
(D) None of the above

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Q. What is the output of the following code snippet? int x = 10; int y = 0; cout << (x || y);

(A) 0
(B) 1
(C) 10
(D) 20

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Q. Which of the following is the correct way to define an enumeration in C++?

(A) enum MyEnum { RED, GREEN, BLUE };
(B) struct MyEnum { RED, GREEN, BLUE };
(C) class MyEnum { RED, GREEN, BLUE };
(D) None of the above

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Q. What is the output of the following code snippet? int x = 10; int y = 20; cout << (!x);

(A) 0
(B) 1
(C) 10
(D) 20

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Q. Which of the following is the correct way to define a structure in C++?

(A) struct MyStruct { int x; float y; };
(B) class MyStruct { int x; float y; };
(C) union MyStruct { int x; float y; };
(D) None of the above

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Q. What is the output of the following code snippet? int x = 10; int y = 20; cout << (x == y);

(A) 0
(B) 1
(C) 10
(D) 20

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