/*Include necessary libraries*/
#include <stdio.h>
#include <math.h>

void main()
{
        /* Define & initialize variables */
        int int_one, int_two, int_three, int_four, int_five;
        int sum=0, diff=0;
        float root=0;

        /* Prompt for input of data */
        printf("\n\nPlease enter 5 integer values, pressing enter after each number: \n");
        printf("First Number: ");
        scanf("%d", &int_one);
        printf("Second Number: ");
        scanf("%d", &int_two);
        printf("Third Number: ");
        scanf("%d", &int_three);
        printf("Fourth Number: ");
        scanf("%d", &int_four);
        printf("Fifth Number: ");
        scanf("%d", &int_five);

        /* Because we are dividing by int_four + int_five, the sum !=0 */
        while ((int_four + int_five)==0)
        {
                printf("\n\nThe sum of the fourth and fifth number cannot be zero.\n");
                printf("Please re-enter each number as prompted below:\n");
                printf("Fourth Number: ");
                scanf("%d", &int_four);
                printf("Fifth Number: ");
                scanf("%d", &int_five);
        }

        /* Note: each integer must be converted to float before
           multiplaction & division as they will be used in sqrt()*/
        root = ((float)int_one * (float)int_two * (float)int_three)/(float)(int_four +
(float)int_five);

        /* Because we are taking a square root, the product of the first three
           numbers divided by the sum of the fourth and fifth cannot be <0 */
        while (root<0)
        {
                printf("\nPlease enter the first number with the opposite sign\n");
                printf("of what was originally entered. This will allow us\n");
                printf("to use the square root function.\n");
                printf("Original value of first number: %d\n", int_one);
                printf("Enter new value: ");
                scanf("%d", &int_one);

                /* Re-calculate root with new numbers */
                root = ((float)int_one * (float)int_two *
(float)int_three)/((float)int_four + (float)int_five);
        }

        /* Display new values */
        printf("\n\nThe values which have been stored are:\n");
        printf("%d %d %d %d %d", int_one, int_two, int_three, int_four, int_five);

        /* Sum of all five integers */
        sum = int_one + int_two + int_three + int_four + int_five;

        /* Difference of third and second integers */
        diff = int_three - int_two;

        /* Square root of product of first three divided by sum of last two */
        root = sqrt(root);

        /* Display values of sum, diff, root */
        printf("\n\nThe sum of all five integers is: %d\n\n", sum);
        printf("The difference of the third and second integers is: %d\n\n", diff);
        printf("The square root of the product of the first three integers divided\n");
        printf("by the sum of the last two integers is: %f\n\n\n", root);

        /* End of program */
}