C/C++ C++ Power of Two Check

int main() {
     int num ;
     cin >> num ;
     int f = 0 ;
   
 
        while (num>=1) {
          if(num == 1 ) {
         cout << "Yes" << endl;
         break ;  } else {
          f  = num %2 ;
           num = num / 2 ; }
     }

        while (num>=1) {
       if (f ==0) {
         cout << "Yes" << endl ;
         break ;
       } else {
         cout << "No" << endl ;
       break ;
       }
        }
 }

#include <math.h>
#include <iostream>

int main() {
    int number;
    std::cout << "Number: ";
    std::cin >> number;
    std::cout << ((floorf(log2(number)) == log2(number)) ? "Yes" : "No");

    return 0;
}