Answer: C++ Empty constructor necessity depends upon class design requirements . We know that C++ class constructor is called when we create an object of a class. If a class is not required to initialize its data member or does not contain data member, there is no need to write empty constructor explicitly.
Is constructor necessary in C#?
We also call this as a special method of the class. In case we don’t provide any constructor in the class, the compiler will create a default constructor for that particular class. So by default there will be one constructor of the class and it’s mandatory .