C/C++ check if one bit is set in, i.e. int variable

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In C, if you want to hide bit manipulation, you can write a macro:

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

and use it this way to check the nth bit from the right end:

CHECK_BIT(temp, n - 1)

In C++, you can use std::bitset.

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