SECOND LARGEST NUMBER IN AN UNSORTED ARRAY USING C PROGRAM

#include
int main(){
  int a[50],size,i,big;
  printf("\nEnter the size of the array: ");
  scanf("%d",&size);
  printf("\nEnter %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];
  }
  printf("\nBiggest: %d",big);
  return 0;
}