#include <stdio.h>

int main ()
{
        int lengthYard1 = 0, widthYard1 = 0, lengthHouse1 = 0, widthHouse1 = 0;
        int lengthYard2 = 0, widthYard2 = 0, lengthHouse2 = 0, widthHouse2 = 0;
        int areaYard1 = 0, areaYard2 = 0;

        // Here's what I dont get.
        printf ("The area of grass on Yard 1: %d",&areaYard1);
        printf ("\nThe area of grass on Yard 2: %ld\n\n",&areaYard2);
        //

        // Getting length and widths of first yard
        printf ("Enter Length of Yard1 and Width of Yard1: ");
        scanf ("%d%d",&lengthYard1, &widthYard1);
        printf ("\nEnter Length of House1 and Width of House1: ");
        scanf ("%d%d", &lengthHouse1, &widthHouse1);

        // Getting length and widths of second yard
        printf ("\n\nEnter Length of Yard2 and Width of Yard2: ");
        scanf ("%d%d",&lengthYard2, &widthYard2);
        printf ("\nEnter Length of House2 and Width of House2: ");
        scanf ("%d%d", &lengthHouse2, &widthHouse2);

        // "The calculation"
        areaYard1 = (lengthYard1 * widthYard1) - (lengthHouse1 * widthHouse1);
        areaYard2 = (lengthYard2 * widthYard2) - (lengthHouse2 * widthHouse2);

        // Same output as before
        printf ("The area of grass on Yard 1: %d",&areaYard1);
        printf ("\nThe area of grass on Yard 2: %d\n\n",&areaYard2);

        return 0;
}