U can take logarithm base 2, and check the result is in interger form or floating point form, u can check whether it is power of 2 or not.

assume : x is input number and want to check whethe x is power of two or not.
code: result = x & (x-1);
if( result == 1)
x is not power of two
else
x is power of two.

U can take logarithm base 2, and check the result is in interger form or floating point form, u can check whether it is power of 2 or not.



assume : x is input number and want to check whethe x is power of two or not.
code: result = x & (x-1);
if( result == 1)
x is not power of two
else
x is power of two.

small modification in the above program.
{
result=x&(x-1);
if(x==0)
printf("number is power of 2");
else
prinf("its not power of 2");
}

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