#include <stdio.h>

#define x 28.3495231 /* ounce to grams conversion */
#define y .0283495231 /* ounce to kilograms conversion */
#define z 453.59237 /* pounds to grams conversion */
#define h .45359237 /* pounds to kilograms conversion */

int main(void)
{
float  grams_from_ounces,
        grams_from_pounds,
        kilograms_from_ounces,
        kilograms_from_pounds,
        ounces,
        pounds;

grams_from_ounces=ounces*x;
kilograms_from_ounces=ounces*y;
grams_from_pounds=pounds*z;
kilograms_from_pounds=pounds*h;

printf("Insert ounces to be converted to grams and kilograms: ");
scanf("%d", &ounces);

printf("Insert pounds to be converted to grams and kilograms: ");
scanf("%d", &pounds);

printf("%s%s%.3f%s%s%.3f%s%s%s%.3f%s%s%.3f%s", "\nOunces:\n\n", "   ", grams_from_ounces, " grams\n", "   ", 

kilograms_from_ounces, " kilograms\n", "\nPounds:\n\n", "   ", grams_from_pounds, " grams\n", "   ", kilograms_from_pounds, " kilograms\n");

return 0;
}