Answer Posted / rajiv malhotra

/* THIS SOLUTION IS 100% CORRECT */

#include<stdio.h>
int isPowerOf2(float n)
{
while(n>1)
{
n/=2.0;
}
return (n==1)?1:0; /* 1-> TRUE; 0-> FALSE*/
}
void main()
{
int x,n;
printf("enter a number\n");
fflush(stdin);
scanf("%d",&n);
x=isPowerOf2(n);
if(x==1)
printf("\n yes");
else
printf("\n no");
}

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