C language - How to write a C program to find the power of 2 in a normal way and in single step?

[GEEK]

How to write a C program to find the power of 2 in a normal way and in single step?

[sands7788]

How to write a C program to find the power of 2 in a normal way and in single step?

if((n&(n-1))==0)
printf("The number is a power of two");
Eg:
Consider 8
8---> 1000
7---> 0111
8&7-->0000
Therefore 8 is a power of 2!!
Consider 12
12---> 1100
11---> 1011
12&11-->1000
Therefore 12 is not a power of two

[query123]

#include<math.h>

pow(2,i); // 2 raise to i......i can have any value

[sk_kireeti]

1<<n;

/* above statement is equal to 2 power n; you can change value of n to any value.
But keep in mind that this statement abilities are restricted by the size of integer.
So you can't try with too big value for n */

Thanks,
Krishna

[Ramesh P]

1<<n dude this statement is not working.....