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When are automatic variables declared in a C function?

Question

When are automatic variables declared in a C function?

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Solution

Automatic variables in a C function are declared at the time the function is called. Here are the steps:

  1. A C function is called in a program.
  2. As the function is called, memory is allocated for all automatic variables declared in that function.
  3. These automatic variables only exist within the scope of the function. This means they are created when the function starts, and they are destroyed when the function ends.
  4. If the function is called again, new instances of these automatic variables are created. The new instances do not retain the values of the previous instances.
  5. The automatic variables are initialized every time the function is called. If no initial value is provided, the automatic variables contain garbage values.

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