The difference between a dynamic variable and a static variable

The difference between a dynamic variable and a static variable:

1. Storage location

Dynamic variables: stored in memory out-of-stack data area

Static variables: stored in the global data area (static data area)

2. Life Time

Dynamic variables: Depending on the location you define, such as what you define in a function, variables that are outside the scope of the function are invalidated

Static variable: Released at the end of the program

3. Scope

Dynamic variables: The same as you define the location to determine, and the 2nd is the same

Static variable: Valid in current file

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The difference between a dynamic variable and a static variable