What are advantages and disadvantages of external storage class?

What are advantages and disadvantages of external storage class?

Some main advantages and disadvantages of external storage class are given below:

advantage:

1.In Persistent storage of a variable retains the updated value.
2.The value is globally available.
 
Disadvantage:

1. Even we does not need the variable the storage for an external variable exists.
2.Side effect may be produce unexpected output.
3.We can not modify the program easily.



By:Vivek
Date:2029-12-08 00:00:00

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