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Today, I would like to share with you the relevant knowledge points about the citation in C++ and how to use the const keyword. The content is detailed and the logic is clear. I believe most people still know too much about this knowledge, so share this article for your reference. I hope you can get something after reading this article.

Quote

The following writing defines a reference and initializes it to refer to a variable.

Type name & reference name = a variable name

Int n = 4 int & r = n; / / r refers to the type of int r.

A reference to a variable is equivalent to this variable, equivalent to an alias for that variable.

Int n = 7 Bint & r = n; / / r quotes NBI r and n is the same thing r = 4 th cout

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