second largest element in an array- c program

This program will ask for the size of an array and then elements of an array.
After you input the elements, it will show the second largest element in that array.

Program:

/*
Developed by deepak anand.
For more programs,
visit www.programming-stuff-4-u.blogspot.in
*/
//C program to find the second largest element in an array
#include<stdio.h>
int main(){
  int a[50],size,i,j=0,big,secondbig;
  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]);

  big=a[0];
  for(i=1;i<size;i++){
      if(big<a[i]){
           big=a[i];
           j = i;
      }
  }

  secondbig=a[size-j-1];
  for(i=1;i<size;i++){
      if(secondbig <a[i] && j != i)
          secondbig =a[i];
  }
 
  printf("Second biggest: %d", secondbig);
  return 0;
}