#include <stdio.h>
#include <stdlib.h>

#define MAX 1000

void readdata ( int A[], int n )
{
   int i;

   for (i=0; i<n; ++i) {
      printf("Item %3d: ", i);
      scanf("%d", &A[i]);
   }
}

void average ( int A[], int n )
{
   int sum, i;
   double avg;

   sum = 0;
   for (i=0; i<n; ++i) sum += A[i];
   avg = (double)sum / (double)n;
   printf("Average = %lf\n", avg);
}

void minimum ( int A[], int n )
{
   int i, min;

   min = A[0];
   for (i=1; i<n; ++i) if (A[i] < min) min = A[i];
   printf("Minimum = %d\n", min);
}

void maximum ( int A[], int n )
{
   int i, max;

   max = A[0];
   for (i=1; i<n; ++i) if (A[i] > max) max = A[i];
   printf("Maximum = %d\n", max);
}

int main ()
{
   int n, A[MAX];
   char resp;

   printf("Enter n : "); scanf("%d", &n);
   readdata(A,n);
   do scanf("%c",&resp); while (resp != '\n');
   printf("What to compute (a/m/M) ? ");
   scanf("%c", &resp);
   if (resp == 'a') average(A,n);
   else if (resp == 'm') minimum(A,n);
   else if (resp == 'M') maximum(A,n);
   else printf("Unrecognized command...\n");
   exit(0);
}