C++ project of school mangment system

            C++ SIMPLE PROJECT FOR STORYING RECORDS OF STUDENTS 
 POST COMMENT FOR ANY ERROR OR IF YOU HAVE ANY PROBLEM WITH THE  
                                                        CODE
 #include<iostream>
 #include<windows.h>
using namespace std;
int main()
{
string name[3];
int id[3] ;
int count=0;
int z;
int y;
int ch;
int k;
int roll;
int c;
int dd;
char yy;
cout<<"*************************WELLCOME TO DATABASE         SYSTM*********************"<<endl;

while(1)
{
cout<<"\t\tpress 1 for entry "<<endl;
cout<<"\t\tpress 2 for full data display "<<endl;
         cout<<"\t\tpress 3 changing :  "<<endl;
          cout<<"\t\tpress 4  for exit "<<endl;
cin>>ch;

if(ch==1)
{    count++;
for(int x=0;x<3;x++)
    {

cout<<"NAME :"<<endl;
cin>>name[x];
cout<<"ID :"<<endl;
cin>>id[x];
  }
}
else if(ch==2)
{
    if(count==0)
    {
    cout<<"  SORRY NO DATA  :"<<endl<<endl;
    }

           else if (count!=0)
     {
     
      cout<<"do you want to see full data press 1 or press 2 for indivial :"<<endl;
         cin>>z;
                if(z==1)
        {
         
         
 for(int i=0;i<3;i++)
        {

            cout<<"name of \t:"<<name[i]<<endl;
           cout<<"id of   \t:"<<id[i]<<endl;
               }
                     }
else if(z==2)
{
cout<<"Searching BY ID PRESS 1 for by NAME PRESS 2:"<<endl;
cin>>k;
if(k==1)
{
cout<<"enter your roll no :"<<endl;
cin>>roll;
for(int i=0;i<3;i++)
{
if(roll==id[i])
{
cout<<"the roll found "<<endl<<"NAME :"<<name[i]<<"  "<<"ROLL NUM :"<<id[i]<<endl;

}

}
}
if(k==2)
{
cout<<"enter your name  :"<<endl;
cin>>na;
for(int i=0;i<3;i++)
{  
if(na==name[i])
{
cout<<"the name found "<<endl<<endl<<"NAME :"<<name[i]<<"  "<<"ROLL NUM :"<<id[i]<<endl<<endl;
     
}
   
}


} 
}    //************************************************************
else if(ch==3)
{
if(count==0)
{
cout<<"SORRY NO DATA  :"<<endl;
}
else if(count !=0)
      {
      cout<<"ENTER ID TO CHANGE RECORD :"<<endl;
      cin>>dd;
      for(int i=0;i<3;i++)
      {
      if(id[i]==dd)
      {
     
      cout<<"RECORD FOUND :\t"<<"NAME  : "<<name[i]<<" ID :"<<id[i]<<endl;
      cout<<"do you want change it yes or no :"<<endl;
             cin>>yy;
             
            if(yy=='y')
        {
      cout<<"enter new name and id :"<<endl;
      cout<<"NAME :"<<endl;
      cin>>name[i];
      cout<<"ID :"<<endl;
      cin>>id[i];
     
      cout<<"record change to "<<"NAME :"<<name[i]<<"id :"<<id[i]<<endl;
      }
      else if(yy=='n')
      {
      // break;
      }
     
      }
      }
      

            }
}



//***********************************
else if(ch==4)
{
cout<<"\t\tPROGRAM IS TERMINATING  :"<<endl;
for(int x=1;x<100;x++)
{
cout<<".";



}
break;
}
else if(ch==5 || ch== 6 || ch==7 || ch==8 || ch== 9)
{
cout<<"       INVALID      "<<endl;
break;

}

}

}