برنامه دفترچه تلفن ++c

#include <iostream.h>
#include <conio.h>
#include <string.h>
#include <stdio.h>
int x=1;
struct tell{
              char name[20];
           char family[20];
           int phone;
           } list[100];
void add()
{if (x>=100)
       cout<<"sory. the fhone book is complete"<<endl;
   else
          cout<<"input first name :";
       cin>>list[x].name;
       cout<<"input last name :";
       cin>>list[x].family;
       cout<<"input phone number :";
       cin>>list[x].phone;
       clrscr();
       x++;}
void search()
{int i,num,p;
char text[20];
    cout<<"search by name(1) or tell number(2):";
    cin>>p;
            if(p==1)
         {
              cout<<"name:";
             cin>>text;
             for(i=1;i<=x;i++)
             {
                if (strcmpi(text,list[i].name)==0)
                {
                   cout<<list[i].name<<endl;
                   cout<<list[i].family<<endl;
                   cout<<list[i].phone<<endl;
               }
                else cout<<"this name not here"<<endl;
            }
         }
      else
      if    (p==2)
      {
         cout<<"tell number:";
         cin>>num;
         for(i=1;i<=x;i++)
          {
            if (num==list[i].phone)
            {
               cout<<list[i].name<<endl;
               cout<<list[i].family<<endl;
               cout<<list[i].phone<<endl;
            }
            else cout<<"this number not here"<<endl;
         }
      }
      else cout<<"sorry"<<endl;
}
void list_()
{
int i;
    for(i=1;i<x;i++)
      {cout<<"----------------"<<endl;
        cout<<"|"<<list[i].name<<"|";
      cout<<"|"<<list[i].family<<"|";
      cout<<"|"<<list[i].phone<<"|"<<endl;
      cout<<"----------------"<<endl;
      }
}
void delet()
{
int a,i,j;
    cout<<"enter a fhone number for delete:";
   cin>>a;
   for(i=1;i<=x;i++)
       {if (a==list[i].phone)
          {for (j=i;j<=x;j++)
             {strcpy(list[j+1].name,list[j].name);
            strcpy(list[j+1].family,list[j].family);
            list[j+1].phone=list[j].phone;
            }
         }
            else
             cout<<"this number not here"<<endl;}}
int main()
{
int c,t,i,y;
long f;
        while(1)
          {
         cout<<"1-Add"<<endl;
          cout<<"2-Search"<<endl;
          cout<<"3-List"<<endl;
          cout<<"4-Delete"<<endl;
          cout<<"5-Exit"<<endl<<"insert a number then press enter:";

          cin>>c;
      switch (c){
          case 1:
             add();
            break;
         case 2 :
             search();
            break;
         case 3  :
             list_();
            break;
         case 4   :
             delet();
            break;
         case 5    :
             return 0;
            break;
            }
            }
getch();
return 0;
}