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Give a oneline C expression to test whether a number is a
power of 2?

Answer Posted / xyz

main()
{

int a[30];
int i=0;
for(i=0; i<30; i++)
a[i]=i;
for(i=0; i<30;i++)
{
if(!(a[i] & a[i-1]))
printf("%d is power of 2\n",a[i]);
else
printf("%d is not a power of 2\n",a[i]);
}



}

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