/* File: big.c
   This file uses lots and lots of functions.
*/

#include <stdio.h>
#include "genlib.h"
#include "simpio.h"

/* Prototypes for the functions we use. */
int sum (int x, int y) ;
int max (int x, int y) ;
int min (int x, int y) ;
double avg (int x, int y) ;
int dist (int x, int y) ;

/* Function: sum
   Returns the sum of x and y.
*/
int sum (int x, int y) {

  return (x + y) ;
}

/* Function: max 
   Returns the larger of x and y.
*/
int max (int x, int y) {

   if (x > y) {
      return (x) ;
   } else {
      return (y) ;
   }
}

/* Function: min
   Returns the smaller of x and y.
*/
int min (int x, int y) {

   if (x < y) {
      return (x) ;
   } else {
      return (y) ;
   }
}

/* Function: avg
   Returns the average of x and y.
   Note: avg returns a *** double *** value.
*/
double avg (int x, int y) {
   double average ;
   
   average = (x + y) / 2.0 ;
   return (average) ;
}


/* Function: dist 
   Returns the absolute value of x - y.
*/
int dist (int x, int y) {
   int distance ;

   distance = x - y ;
   if (distance < 0) {
      return (- distance) ;
   } else {
      return (distance) ;
   }
}

main() {
   int a, b ;

   printf("Enter first number: ") ;
   a = GetInteger() ;
   printf("Enter second number: ") ;
   b = GetInteger() ;
   printf("\n") ;
 
   printf("The sum of %d and %d is: %d\n", 
	   a, b, sum(a, b) ) ; 
   printf("The smaller of %d and %d is: %d\n", 
	   a, b, min(a, b) ) ; 
   printf("The larger of %d and %d is: %d\n", 
	   a, b, max(a, b) ) ; 
   printf("The average of %d and %d is: %f\n", 
	   a, b, avg(a, b) ) ; 
   printf("The distance between %d and %d is: %d\n", 
	   a, b, dist(a, b) ) ; 
   printf("That's all folks.\n") ;
}