/* Dasprog C - 2019
William Handi Wijaya
0087

Program untuk menghitung jumlah dan rata-rata dari dua bilangan.
*/


#include <stdio.h>

double get_Double(void);

int main(void)
{
    printf("* * Compute the sum and average of two numbers. * *\n\n\n");
    double  one, two, /* input - numbers to process       */
            sum,      /* output - sum of one and two      */
            average;  /* output - average of one and two  */

    /* Get two numbers. */
        //Insert the first number;
        printf("Please insert the first number => ");
        one = get_Double();

    //insert the second number
        printf("Please insert the second number => ");
        two = get_Double();

    /* Compute sum of numbers. */
        //Sum the number that been set to variabel 'one' and 'two'
        sum = one + two;

    /* Compute average of numbers. */
        //Divide by two the sum of the two numbers that already been calculates before
        average = sum / 2;

    /* Display sum and average. */
    printf("Sum = %0.3f \nAverage = %0.3f\n\n", sum, average );
    return (0);
}

double get_Double(void)
{
    double a;
    scanf("%lf", a);
    return a;
}