Deletion in an array

Program to delete an element in an array : 

#include<iostream.h>                                                         

#include<process.h>                                                          

int lsearch(int [], int, int);   
                                             

void main()                                                                   

{                                                                                

              int ar[50], item, n ,index;                                                  

              cout<<"how many elements do u want to create array with?...";                

              cin>>n;                                                                       

              cout<<"\n enter array elements...\n";                                         

              for(int i=0; i<n; i++)                                                        

              cin>>ar[i];                                                                 

              char ch='y';        
                                                         

              while( ch=='y'|| ch=='Y')                                                     

              {                                                                               

                       cout<<"\n enter element to be deleted...";                                   

                       cin>> item;                                                                  

                              if(n==0)                                                                      

                              { 
                                    cout<<"underflow!!\n";exit(1);  }                                             

                                    index= lsearch(ar, n, item);                                                

                                    if(index!=-1) ar[index]= 0;                                              

                                    else

                                    cout<<" sorry!! no such element in the array.\n";                           

                                    cout<<"\n the array now is as shown below....\n";                            

                                    cout<<" zero (0) signifies deleted element \n";     
                         

       for(i=0; i<n; i++)                                                            

       cout<< ar[i]<<" ";                                                       

       cout<<endl;                                                                  

       cout<<" after this emptied space will be shifted to the end of array \n”;      

       for (i=index; i<n; i++)                                                      

       { ar[i]=ar[i+1];  }                                                      

        n-=1;                                                                        

        cout<<"\n want to delete more elements? (y/n)...";                            

       cin>>ch;

  }       
                                                            

      cout<<" the array after shifting all emptied spaces towards right is..\n”:       

      for (i=0; i<n; i++)                                                            

      cout<< ar[i]<<" ";                                                        

      cout<<endl;                                                          

}      
                                                       

int lsearch(int ar[], int size, int item)                                     

{                                                            

      for(int i=0; i<size; i++)

      {

            if(ar[i]==item)

            return I;

      }

     return -1;

}