Answer Posted / ahmed ihmeid

bool isPowerOf2(int num)
{
float x;

x = num % (sqrt(num));

if( x == 0)
return true; //it is a power of 2
else
return false; //it is not
}

proof:
4 % 2 = 0
16 % 4 = 0
22 % 4.7 != 0

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