Shulou(Shulou.com)06/02 Report--

In this issue, the editor will bring you about how to use consortia to save memory in C++. The article is rich in content and analyzes and narrates it from a professional point of view. I hope you can get something after reading this article.

Reason (reason)

A union allows a single piece of memory to be used for different types of objects at different times. Consequently, it can be used to save memory when we have several objects that are never used at the same time.

The federation uses the same block of memory to manage different types of objects that exist at different times. In other words, using unions can save memory when different objects will never be used at the same time.

Example (sample)

Union Value {

Int x

Double d

}

Value v = {123}; / / now v holds an int

Cout

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