#include <stdio.h>

main()
{
   float kgs, lbs;

   printf("\nEnter a weight in kilograms (0 to end): ");
   scanf("%f", &kgs);
   while (kgs != 0.0)
                   /* The while statement repeats everything contained within
                      it as long as its argument remains true (in this case,
                      the variable 'kgs' does not equal zero). If you want to
                      have more than one way of ending the loop, use the and
                      logical operator (&&) instead of more than one
                      argument.                                           */
   {
      lbs = kgs * 2.2;
      printf("%6.2f kilograms = %6.2f pounds\n", kgs, lbs);
      printf("\nEnter a weight in kilograms (0 to end): ");
      scanf("%f", &kgs);
   }
   printf("\nThat's all, y'all!\n");
}