When is a copy constructor called in a C++ program?
- When an object is returned by value from a function.
- When we assign values from one object to another without the use of pointers.
- When an array of objects is created.
- When a function is called by value.
A copy constructor in C++ is called in several scenarios: 1) when an object is passed (by value) to a function, 2) when an object is returned (by value) from a function, 3) when an object is constructed based on another object of the same class, and 4) during the initialization of an object from another.
Loading...
Related Quiz
- When a class B is inherited publicly from a class A, then the protected members of class A will become _______ in class B.
- When a continue statement is encountered in a loop, the program control resumes from _______.
- What is the primary purpose of using enum in C++?
- Consider a large-scale software project that heavily utilizes templates and generic programming. With an impending deadline, the compilation time is becoming a significant bottleneck. Which C++ feature/technique might be best suited to reduce compilation times without altering runtime performance?
- Consider a scenario where you have a large dataset and you need to frequently erase and insert elements in the middle of the data. Which STL container should be avoided in order to prevent frequent reallocations and data movements?