error C2512: no appropriate default constructor available

Question

I am getting this annoying error and I don\'t know why =( ! This is the question , I solved it but I am having a problem with the constructor.

Write a

Answer 1

A default constructor is one without any parameters. Normally, it is provided for you. But if you explicitly define any other constructor, then it is not. So you have to define it yourself, or not use it. You are using it when you create an object in main, like this:

Circle C;

So, either define a default constructor, or don't use it.