Find out second smallest element of an unsorted array?

Find out second smallest element of an unsorted array?

#include<stdio.h>
#include<conio.h>
void main()
{
  int a[50],size,i,j=0,sm, sdsmall;
  printf("Enter the size of the array: ");
  scanf("%d",&size);
  printf("Enter %d elements in to the array: ", size);
  for(i=0;i<size;i++)
         scanf("%d",&a[i]);
  small=a[0];
  for(i=1;i<size;i++)
{
         if(sm>a[i])
{
               sm=a[i];
               j = i;
      }
  }
  sdsmall=a[size-j-1];
  for(i=1;i<size;i++)
{
         if(sdsmall > a[i] && j != i)
              sdsmall =a[i];
  }
  printf("Second smallest: %d", sdsmall);
  getch();
}

Sample Output:
Enter the size of the array: 5
Enter 5 elements in to the array: 5 7 3 2 6
Second smallest: 3