What is the function of static keyword

What does static mean? How to use static in C language? What is the function of static keyword? I believe many people will have such questions. Let’s summarize static.

1: What does static mean?

static is a high-level computer language. We often see it in c and java. Static is often named with the keyword and functions, and static also appears in other high-level languages. Of course, the effects are different in different languages.

2: What is the role of static keyword

1.java

In java, we want to define a class member and use To be independent of any other objects, in general, class members must be accessed through objects of other classes. In many cases, we can use them by ourselves without introducing instances. As long as we add keywords in front of the declaration, we can create A member that can be accessed before other classes are created. We can do this by referencing static variables.

2. In C language

In C language, static functions are divided into two types of functions, internal functions and external functions. Internal functions are It is called a static function. When a program consists of many source files, the C language can be called according to other source files. It cannot be called using the same program. As long as we add a keyword in front of the function, it is enough, as follows ：

static Function type function name (function parameter list) {……}

There are many benefits of using internal functions, and they can be written differently for different people. function, you don’t need to worry about the duplication of defined function names with other function names. If the external function finds that no keyword appears, it means that the function is an external function.

The above is a complete introduction to the role of the static keyword. If you want to know more about Java tutorial, please pay attention to the php Chinese website.

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