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Which bit wise operator is suitable for checking whether a particular bit is on or off?

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Which bit wise operator is suitable for checking whether a particular bit is on or off?
posted Sep 3, 2014 by anonymous

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2 Answers

+2 votes

Use bit wise and (&) operator to check whether a particular bit is on or off.

Example:

ans = paticular bit value & 1

if ans is 1 then the bit is set i.e on
else it is off, i.e not set.

answer Sep 3, 2014 by Arshad Khan
+2 votes

define CHECK_BIT(var,pos) ((var) & (1<<(pos)))

variable=CHECK_BIT(temp, 3)
if the variable is 1. it will on else off.
In c++ you could use std::bitset.

answer Sep 4, 2014 by Double S
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