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When a programmer should use register variable and when not to use register variable?

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When a programmer should use register variable and when not to use register variable?
posted Nov 10, 2014 by Ganesh

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1 Answer

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I think a programmer should use register variable where time is a constraint.

The reason behind this is that reading/writing data from/to the CPU internal registers is faster compared to RAM.

So in a real time application where every microsecond counts, it is better to use a register variable.

Added info: The formal arguments of a function are of register storage class type.

answer Nov 17, 2014 by Ankush Surelia
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