What does it mean in different languages? Is this sign // the same what / or sometimes it means the same?

Question

What does // mean? Is this sign used in diffrent languages?

Answer 1

In many languages like C, Java and so on it is used for a comment:

// This is a comment

In Python it is used for floor division.

5/2 == 2.5
5//2 == 2

Answer 2

// is used for single-line comments on programming languages like C++/Java/Javascript.

/ is tipically used for division.