use a class methode withouth a instance

Question

is it possibble to use a class methode without making a instance, something like this:

https://code.sololearn.com/cbbe6QJSzd6P/?ref=app

Answer 1

Namespaces are there to prevent the collision of names.

For example the standard library has class vector inside the std namespace.
If you use another library like a graphic library, it isn't uncommon that there is another class called vector ( the math version ) in its own namespace.

Without the namespaces your compiler wouldn't be able to tell which one you want to use.
So they prevent ambiguity issues.

So having a class just with static functions probably isn't a better alternative than a namespace.

Answer 2

Yes, just use myClass::hi() instead of myClass.hi() if the function is static.
( and move the class above main )

Answer 3

https://www.sololearn.com/Discuss/1745043/i-need-a-good-explain-for-in-this-code

Answer 4

Dennis it now works but what does the "::" mean, i know it i used for namesspaces but i dont really know much about those either

Answer 5

Dennis aren't namespaces and static classes then basicly the same thing?

Answer 6

Pretty much, yea. Except that they can be private in a class.

Answer 7

Dennis oh yeah, but then what are namespaces used for?

Answer 8

Dennis thabk you, i now understand it