public class Pro1111 {

 static Scanner sc = null;
 static String [] sdata_name = new String [100];
 static String [] sdata_attribute = new String[100];
 static String [] svalue = new String[100];
 static int key = -1;
 
 FileInputStream fis = null;
 
 public static void main(String[] args) {
  do{
   
  
   String nu = menu();
   int nuu=999;
   try{ nuu =  Integer.parseInt(nu);}catch(Exception e){System.out.println("please number.");}
  
   if(nuu== 0){break;} 
  else if(nuu ==1){input_data(); input_attribute();input_value(key);}
  else if(nuu ==2){view_data();}
    else if(nuu==3){operation_data();}
  }while(true);
  
 }

 private static void operation_data() {
   sc = null;
   String yn=null;
   int i=0,ibe=0;
   System.out.println("operation");
   System.out.println("relation key: ");
   do{ sc = new Scanner(System.in);
  
  try{ i = sc.nextInt();ibe=1;} catch (Exception e){System.out.println("please number.");ibe=0;}
  if(ibe==1){
  System.out.println("key: "+ i + " sdata_name: "+ sdata_name[i]+ " svalue: "+ svalue[i]+ " type: "+ sdata_attribute[i]);
   System.out.println("This data? y/n");
   operation_data_in(i);
  }
   
   }while(sc==null);
  
  
 }

 private static void operation_data_in(int i) {
  // TODO Auto-generated method stub
  
 }

 private static void view_data() {
  System.out.println("view data..");
  for(int i=0; i<=key; i++){
   System.out.println("key: "+ i + " sdata_name: "+ sdata_name[i]+ " svalue: "+ svalue[i]+ " type: "+ sdata_attribute[i]);
  }
  
 }

 private static void input_value(int key2) {
   System.out.println("input value key " + key + " "+sdata_name[key] + " ?");
   sc = null;
   do{
    sc = new Scanner(System.in);
    String value = sc.nextLine();
    
    svalue[key] = value;
   
    System.out.println();
    System.out.println("ok");
   }while(sc==null);
 }

 private static void input_data() {
    key++;
   System.out.println("key: "+key );
   System.out.println("input data name:");
    sc =null;
   do{
    sc= new Scanner(System.in);
   String >    sdata_name[key] = data;
   }while(sc==null);
 }
 private static void input_attribute() {
    
   System.out.println("key: "+key );
   System.out.println("input data_attribute:");
   System.out.println("t)time(sec)/ n)name / b)boolean");
    sc =null;
   do{
    sc= new Scanner(System.in);
   String >   sdata_attribute[key] = data;
   }while(sc==null);
 }

 private static String menu() {
  sc = null;
  
  
  sc = new Scanner(System.in);
  System.out.println("0. exit");
  System.out.println("1. input");
  System.out.println("2. view data");
  System.out.println("3. operation");
  return sc.nextLine();
   
  
 }
}