How to understand the range parsing operator in C +

This article introduces the knowledge of "how to understand the range parsing operator in C +". Many people will encounter such a dilemma in the operation of actual cases. next, let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

1. When there is a local variable with the same name, access the global variable:

Output: the value of global x is 0 and the value of local x is 10

two。 Define a function outside the class:

3. Access the static variables of a class:

Output: static x has a value of 1. Local x has a value of 3 Test:: y = 2

4. If you have multiple inheritance:

If the same variable name exists in the two ancestor classes, you can use the range resolution operator to distinguish.

Output: X of An is 10 B and x is 20

5. For namespaces:

If there is a class with the same name in both namespaces, you can use the namespace name with the scope parsing operator to reference the class without any conflicts

6. Reference a class in another class:

If one class exists in another class, we can use the nested class to reference the nested class using the scope resolution operator

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