Question

(a) When should the register storage class specifier be used ? Does using the register storage class specifier guarantee to improve the performance of a program ? (5)
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Answer 1

Answer:

This means that the variable has a maximum size equal to the register size (usually one word) and can't have the unary '&' operator applied to it (as it does not have a memory location). The register should only be used for variables that require quick access such as counters.