Find Second Smallest and Second Largest Element from an Array in C++

Program 1

// find  second largets element from array
#include<iostream>
#define clrscr() system("cls")
using namespace std;

int main()
{
     int ar[500],n,i,max,p;
     clrscr();
     xyz:cout<<"\n Enter limit of array";
     cin>>n;
     if(n>500)
     {
        cout<<"\nInvalid Limit(1 to 500 only) Please enter gain";
        goto xyz;
     }   
     else
     {
           cout<<"\nEnter elements in array\n";
           for(i=0;i<n;i++)
             cin>>ar[i];
             max=ar[0];
             p=0;
             for(i=1;i<n;i++)
             {
                 if(ar[i]>max)
                  {
                    max=ar[i];
                    p=i;
                  }
             }
          cout<<"\n\n***Largets element is*** : "<<max;
          cout<<"\n\n***Position is *** : "<<p;

          //Second Largets
             ar[p]=0;
            max=ar[0];
             p=0;
             for(i=1;i<n;i++)
             {
                 if(ar[i]>max)
                  {
                    max=ar[i];
                    p=i;
                  }
            }   
         cout<<"\n\n----Second largets element is---- : "<<max;
         cout<<"\n\n-----Position is ---- : "<<p;  

     }       


}

Program 2

// find  second largets element from array
#include<iostream>
#define clrscr() system("cls")
using namespace std;

int main()
{
     int ar[500],n,i,min,p;
     clrscr();
     xyz:cout<<"\n Enter limit of array";
     cin>>n;
     if(n>500)
     {
        cout<<"\nInvalid Limit(1 to 500 only) Please enter gain";
        goto xyz;
     }   
     else
     {
           cout<<"\nEnter elements in array\n";
           for(i=0;i<n;i++)
             cin>>ar[i];
             min=ar[0];
             p=0;
             for(i=1;i<n;i++)
             {
                 if(ar[i]<min)
                  {
                    min=ar[i];
                    p=i;
                  }
             }
          cout<<"\n\n***Smallest element is*** : "<<min;
          cout<<"\n\n***Position is *** : "<<p;

          //Second Smallest
             ar[p]=232445490;
            min=ar[0];
             p=0;
             for(i=1;i<n;i++)
             {
                 if(ar[i]<min)
                  {
                    min=ar[i];
                    p=i;
                  }
            }   
         cout<<"\n\n----Second Smallest element is---- : "<<min;
         cout<<"\n\n-----Position is ---- : "<<p;  

     }       


}