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C++ Books Guide and List
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asked Expert 11.4k points 14 22 28

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Advantages of external storage class
1)Persistent storage of a variable retains the latest value
2)The value is globally available
Disadvantages of external storage class
1)The storage for an external variable exists even when the variable is
not needed
2)The side effect may produce surprising output
3)Modification of the program is difficult
4)Generality of a program is affected
answered Guru 24.6k points 29 52 81

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