What will happen when the following C++ code is compiled? 

#include <iostream>
using namespace std;
class Base {
public:
    int value = 10;
};
class Derived : Base {};
int main() {
    Derived d;
    cout << d.value;
    return 0;
}

Options

  • A. It prints 10
  • B. It prints 0
  • C. A compile-time access error occurs
  • D. More than one of the above
  • E. None of the above

Correct Answer (Detailed Explanation is Below)

C. A compile-time access error occurs

Detailed Explanation

Correct Answer: Option C

Explanation: Class inheritance is private by default. Base::value is public in Base, but private inheritance makes it privately accessible as an inherited member of Derived. Therefore, main() cannot access d.value directly.
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TRE4 C and C++ Quiz practice set 3

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