What are the ways to create instances of objects in C++?

There are several ways to instantiate objects in C++.

1. Conventional method: Instantiate an object by using the class name followed by parentheses.

ClassName obj;

1. Dynamic memory allocation method: use the new operator to dynamically allocate memory and return a pointer to the new object.

ClassName* obj = new ClassName();

1. Stack object method: placing objects in the function stack will automatically invoke the destructor to release the object when the function ends.

ClassName obj;

1. Static object method: Declaring an object as a static member using the ‘static’ keyword ensures that the object exists throughout the entire lifespan of the program.

class ClassName {
    static ClassName obj;
};

The above are common ways to instantiate objects, you can choose the appropriate way to instantiate objects based on different needs and scenarios.