#include <stdio.h>

float   maximum(float x, float y);
float   minimum(float x, float y);
void    prn_info(void);

int main(void)
{
   int     i, n;
   float   max, min, x;

   prn_info();
   printf("Input n:  ");
   scanf("%d", &n);
   printf("\nInput %d real numbers:  ", n);
   scanf("%f", &x);
   max = min = x;
   for (i = 2; i <= n; ++i) {
      scanf("%f", &x);
      max = maximum(max, x);
      min = minimum(min, x);
   }
   printf("\n%s%11.3f\n%s%11.3f\n\n",
      "Maximum value:", max,
      "Minimum value:", min);
   return 0;
}

float maximum(float x, float y)
{
   if (x > y)
      return x;
   else
      return y;
}

float minimum(float x, float y)
{
   if (x < y)
      return x;
   else
      return y;
}

void prn_info(void)
{
   printf("\n%s\n%s\n\n",
      "This program reads an integer value for n, and then",
      "processes n real numbers to find max and min values.");
}