to store in array & calculate sum, maximum and minimum

#include<iostream.h>
#include<conio.h>
 void main()
 {
  int i, n, sum=0;
  int x[100];
  clrscr();
  cin>>n;
  int j=0;
  for(i=1; i<=n; i++)
  {
    x[j]=i;
    cout<<i<<endl;
    j++;
    sum=sum+i;
   }

  cout<<"sum of n numbers="<<sum<<endl;
  float avg;
  avg=sum/(float)i;
  cout<<"avg="<<avg<<endl;

  int small;
  small=x[0];
  for(i=1; i<=n; i++)

   if(small>x[i])
  {
   small=x[i];
  }
   cout<<"searching---"<<endl;
   cout<<"The smallest value in the given value array is ="<<small<<endl;
   int biggest;
   biggest=x[0];
   for(i=1; i<=n; i++)
    if(biggest<x[i])
   {
    biggest=x[i];
   }
    cout<<"searching---"<<endl;
    cout<<"The biggest value in the given array is ="<<biggest<<endl;

  getch();
 }