What is the difference between static int a and int a

First, the subject is different.

1, static int a: variable a is defined as a static integer variable.

2.int a: defined as an integer variable.

Second, variability is different.

1, static int a: Its value will be set at compile time and cannot be changed at run time.

2.int A: This value is set at runtime and can be changed at any time.

Third, the scope is different.

1, static int a: scope is limited to files.

2.int A: The scope is inside the function, and it can be used as the holder of a certain value.

Baidu Encyclopedia-Static Variable

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