Write a program to find the second largest of n numbers using an array

#include <stdio.h>
#include <conio.h>
int main()
{
int i, n, arr[20], large, second_large;
clrscr();
printf("\n Enter the number of elements in the array : ");
scanf("%d", &n);
printf("\n Enter the elements");
for(i=0;i<n;i++)
scanf("%d",&arr[i]);
large = arr[0];
for(i=1;i<n;i++)
{
if(arr[i]>large)
large = arr[i];
}
second_large = arr[1];
for(i=0;i<n;i++)
{
if(arr[i] != large)
{
if(arr[i]>second_large)
second_large = arr[i];
}
}
printf("\n The numbers you entered are : ");
for(i=0;i<n;i++)
printf("\t %d", arr[i]);
printf("\n The largest of these numbers is : %d",large);
printf("\n The second largest of these numbers is : %d",second_large);
return 0;
}