C-Program to check whether a number is power of 2 or not

#include <stdio.h>
#include <string.h>

main()
{
  int number;

  printf("Enter the number\n");
  scanf("%d",&number);
  if(!(number&(number-1)))
      printf("%d is a power of 2\n",number);
  else
      printf("%d is not a power of 2\n",number);

}