What are the consequences if an unhandled exception occurs in the constructor of an object?

If an unhandled exception occurs in a constructor of an object in C++, then:

• The constructor is considered to have not completed successfully, and the object is not created.
• Destructors are called for all already created members of the object (for example, fields that were initialized before the exception occurred).
• Memory allocated for the object is automatically released.
• The exception is propagated further up the call stack if not caught within the constructor.

This prevents the creation of partially initialized objects and ensures resource safety.

Example:

class MyClass {
public:
    MyClass() {
        // Initialization
        throw std::runtime_error("Error in constructor");
    }
};

int main() {
    try {
        MyClass obj;
    } catch (const std::exception& e) {
        std::cout << "Caught exception: " << e.what() << std::endl;
    }
}