Learn C++ MCQs
Prepare C++ MCQs (Multiple choice Questions) for exam and job interviews.
Which of the following is not a valid constructor in C++?
1) MyClass() {}
2) MyClass(int) {}
3) MyClass(int, int) {}
4) void MyClass() {}
Answer : Option 4
What will be the output of cout << (3 == 3) << endl;
1) 1
2) 0
3) true
4) false
Answer : Option 1
What is the default access specifier for class members in C++?
1) public
2) private
3) protected
4) None of the above
Answer : Option 2
Which of the following is a correct syntax for a template function?
1) template
2) template
3) void func(template
4) None of the above
Answer : Option 1
What is the output of cout << (7 % 2) << endl;
1) 1
2) 0
3) 3
4) 2
Answer : Option 1
Which of the following is not a valid pointer type in C++?
1) int*
2) int&
3) void*
4) char*
Answer : Option 2
What will be the output of cout << (true && false) << endl;
1) 1
2) 0
3) true
4) false
Answer : Option 2
Which operator is used for typecasting in C++?
1) as
2) cast
3) dynamic_cast
4) None of the above
Answer : Option 3
What is the correct way to declare a constant variable in C++?
1) const int x = 10;
2) int const x = 10;
3) Both 1 and 2
4) None of the above
Answer : Option 3
Which of the following is the correct way to define a union in C++?
1) union MyUnion { int x; float y; };
2) union { int x; float y; };
3) MyUnion { union int x; float y; };
4) None of the above
Answer : Option 1