#include <stdio.h>

const float gallon_per_liter = 0.2642;
const float miles_per_km = 0.6215;

int main(void)
{
	float km_traveled, liter_consumed;

	printf("Enter the distance traveled, in kilometers: ");
	scanf("%f", &km_traveled);
	printf("Enter the amount of gasoline consumed, in liters: ");
	scanf("%f", &liter_consumed);

	printf("Your flight used %.1f l/100km\n", 
		liter_consumed / km_traveled * 100);

	float gallons_consumed = liter_consumed * gallon_per_liter;
	float miles_traveled = km_traveled * miles_per_km;

	printf("Your flight used %.1f miles/gallon\n",
		miles_traveled / gallons_consumed);
	return 0;
}