Q. Which of the followings is/are automatically added to every class, if we do not write our own?
✅ Correct Answer: (D)
All of the above
CPP Programming MCQs | Page - 1
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Q. When a copy constructor may be called?
✅ Correct Answer: (D)
All of the above
Q. Implicit return type of a class constructor is:
✅ Correct Answer: (B)
class type itself
Q. 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.
1) They cannot be virtual.
2) They cannot be private.
3) They are automatically called by new operator.
✅ Correct Answer: (B)
Only 1 and 3
Q. Output of following program?
#include<iostream>
using namespace std;
class Point {
Point() { cout << "Constructor called"; }
}; int main()
{
Point t1;
return 0;
}
#include<iostream>
using namespace std;
class Point {
Point() { cout << "Constructor called"; }
}; int main()
{
Point t1;
return 0;
}
✅ Correct Answer: (A)
Compiler Error
Q. #include<iostream>
using namespace std;
class Point {
public:
Point() { cout << "Constructor called"; }
};
int main()
{
Point t1, *t2;
return 0;
}
using namespace std;
class Point {
public:
Point() { cout << "Constructor called"; }
};
int main()
{
Point t1, *t2;
return 0;
}
✅ Correct Answer: (C)
Constructor called
Q. Which operator is having the highest precedence?
✅ Correct Answer: (D)
equality
Q. Which of the following is FALSE about references in C++?
✅ Correct Answer: (D)
References cannot refer to constant value
Q. Which of the following functions must use reference?
✅ Correct Answer: (B)
Copy Constructor
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