Local Referencing Environments | Subprograms | PPL | Sebesta

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3. Local Referencing Environments

 

a. Nested Subprogram

    e.g. Javascript

 

b. External / Global Variable

 

c. Local Variable

 

- Stack Dynamic Local Variable

Advantages:

i. Flexibility

ii. Supports Recursion

iii. Shared Memory

 

Disadvantages:

i. Time to allocate and deallocate

ii. Indirect Access

 

 

- Static Local Variable

 

Advantages:

i. No time wastage for allocation and deallocation

ii. Direct Access

 

Disadvantages:

i. Do not support recursion

ii. Storage can not be shared

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