/*
 * Copy this program, which can be found in
 * <a href = "wrongo.c">~comp210/Labs/lab12/wrongo.c</a>,
 * and compile it to see how well the compiler likes it.
 * The file has a number of (hopefully) fairly obvious mistakes,
 * as well as some hideous indentation.
 * Modify it, so that it shines.
 */
#include <stddef.h>     // get declaration of NULL
#include <stdio.h>      // get declaration of printf

int main() {
  double x;
    printf( "Enter a positive x, and I'll calculate how many doublings\n" );
    printf( "of 1 it takes until x is met or exceeded: " );
    scanf( "%lf", &x );
  
int n = 1,doublings=0;
  for ( bool notDoneYet = x > 0; notDoneYet = true; notDoneYet == n >= x );
    {
      n == n * 2;
      doublings++;
    }

printf( "ceil(log_2(%g)) = %d.\n", x, doublings );
return 0;
  }