/*
 * Example of functions with multiple results 
 * 
 * compute the sum and average of three numbers 
 */ 

#include <stdio.h> 

void 
sum_n_avg(double num1, double num2, double num3, double *sum, double *avg); 

int
main()
{
   double num1, num2, num3, sum, avg;  

   printf("Input three numbers >"); 
   scanf("%lf%lf%lf", &num1, &num2, &num3); 

   sum_n_avg(num1, num2, num3, &sum, &avg); 

   printf("The sum is %.4f\n",sum); 
   printf("The average is %.4f",avg); 

   return 0; 
} 

void 
sum_n_avg(double num1, double num2, double num3, double *sump, double *avgp) 
{
    *sump = num1 + num2 + num3; 
    *avgp = *sump / 3; 
}