0

Hi,

I hope you can help me out of this because i really dont understand how to fix this code anymore, i tried and tried and it don't work.

When i debug this code in Microsoft Visual Express 2010, it says the following erros are:

1>------ Build started: Project: Adreesbook2, Configuration: Debug Win32 ------
1>  adressbook2.cpp
1>c:\users\twice\documents\visual studio 2010\projects\adreesbook2\adreesbook2\adressbook2.cpp(37): error C2297: '>>' : illegal, right operand has type 'Node *'
1>c:\users\twice\documents\visual studio 2010\projects\adreesbook2\adreesbook2\adressbook2.cpp(37): error C2446: '==' : no conversion from 'int' to 'Node *'
1>Conversion from integral type to pointer type requires reinterpret_cast, C-style cast or function-style cast
1>c:\users\twice\documents\visual studio 2010\projects\adreesbook2\adreesbook2\adressbook2.cpp(37): error C2040: '==' : 'Node *' differs in levels of indirection from 'int'
1>c:\users\twice\documents\visual studio 2010\projects\adreesbook2\adreesbook2\adressbook2.cpp(48): error C2297: '>>' : illegal, right operand has type 'Node *'
1>c:\users\twice\documents\visual studio 2010\projects\adreesbook2\adreesbook2\adressbook2.cpp(48): error C2446: '==' : no conversion from 'int' to 'Node *'
1>Conversion from integral type to pointer type requires reinterpret_cast, C-style cast or function-style cast
1>c:\users\twice\documents\visual studio 2010\projects\adreesbook2\adreesbook2\adressbook2.cpp(48): error C2040: '==' : 'Node *' differs in levels of indirection from 'int'

========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

** The code of the program for the adressbook is here below:**

     [ //address book program using linked lists
        #include <iostream>
        #include<string>
        #include<windows.h>
        using namespace std;
        void gotoxy(int x, int y)    //move the cursor to x y coordinate
        {
            HANDLE hConsoleOutput;
            COORD Cursor = {x,y};
            hConsoleOutput = GetStdHandle (STD_OUTPUT_HANDLE);
            SetConsoleCursorPosition(hConsoleOutput, Cursor);
        }
        class Node 
        {    public:
            string name,email,address,off_address ;
            int phone_no,cell_no;
            Node *next;
        };
        char y;
        void Link_List_Input(Node *&head, Node*&tail) {

            Node *current = new Node;
            cout << " Enter following contents : ";
            cout<<"NAME : ";
            cin >> current->name;
            cout<<"PHONE NUMBER : ";
            cin >> current->phone_no;
            cout<<"CELL NUMBER : ";
            cin >> current->cell_no;
            cout<<"EMAIL : ";
            cin >> current->email;
            cout<<"ADDRESS : ";
            cin >> current->address;
            cout<<"OFFICE ADDRESS : ";
            cin >> current->off_address;

            if (head == NULL >> tail == NULL) 
                    {
                head = current; 
                tail = current; tail->next=NULL;
            } else {
                current->next = head;head = current;
            }
        }

        void Print_Link_List(Node *&head, Node*&tail)
        {
            if (head == NULL >> tail == NULL) 
            {
                cout << "n List is empty";
                return;
            }

            Node *current = head; 

            int count = 0;
        do
        { 
            cout << "n Node Number = " << ++count << " Has Content : "
            <<current->name<<endl
            <<current->phone_no<<endl
            <<current->cell_no<<endl
            <<current->email<<endl
            <<current->address<<endl
            <<current->off_address<<endl;

            current = current->next; 
        }
        while (current != 0); }

        void DeleteAll(Node *&head,Node *&tail)
        {
            system("cls");
            gotoxy(30,10);
            cout<<"Erasing Complete Data :";

               for(int i=0;i<16;i++)
          {     
            gotoxy(8+i,14);
            cout<<"ntttt ________________";
            gotoxy(32,16);
            cout<<char(179);
            gotoxy(33+i,16);
            cout<<char(178);
            gotoxy(23+i,16);
            cout<<"ntttt ================";
            gotoxy(49,16);
            cout<<char(179);
            Sleep(100);
            }

            system("cls");
            cout<<"nnnnnttttNO DATA LEFT :";
            Sleep(1000);
            system("cls");
            cout<<"nnnnnntttReturning to Menu ";
            for(int i=0;i<7;i++)
            {
                Sleep(600);
                cout<<".";}
                system("cls");
                for (int j=0;head!=NULL;j++)
                {
                    Node *ptr=head;
                    head=head->next;
                    delete ptr ;
                }
                return ;
        }
        void Search_In_List(Node *&head,Node *&tail)
        {
            Node *current = head;
            string Name;
            cout<<"Enter the string here ";
            cin>>Name;
            while (current!=NULL)
            {
                if (current->name.compare(0,Name.length(),Name)==0)
                {    
                    cout<<"Matching results :n";
                    cout<<"NAME: "<<current->name<<endl<<"PHONE NUMBER : "<<current->phone_no<<endl<<"CELL NUMBER : "<<current->cell_no<<endl
                        <<"EMAIL: "<<current->email<<endl<<"ADRESS : "<<current->address<<endl<<"Office Adress  :"<<current->off_address<<endl;
                    current=current->next;
                }
                else
                {
                    cout<<"Moving Next :";
                    current=current->next;
                }
            }
        }

        int Delete_Node_Contents(Node*&head)
        {
            string name;
            cout<<"Enter the name for deleting : ";
            cin>>name;
            Node *current,*previous;
            current=head;
            if (head==NULL)
            {
                cout<<"list empty  not possible"<<endl;
            }
            else
            {
            if(head->name.compare(0,name.length(),name)==0)  //deleting head
                {
                    Node *delhead=head;                                
                    cout<<"Node Contains :n"<<head->name<<endl<<head->phone_no<<endl<<head->cell_no<<endl<<endl<<head->email<<endl<<head->address<<endl<<endl<<head->off_address;
                    cout<<"Press Y to delete n OR Press any other key for menue ";
                    cin>>y;
                    if (char(98)==y||char(121)==y)
                    {
                    head = head->next;delete delhead;
                    cout<<"required data has been deleted";return 0;
                    }
                    else {cout<<"Next attempt :";
                    return Delete_Node_Contents(head->next);}

                }
                else
                {
                    while (head->name.compare(0,name.length(),name)<=0 || current->next!=NULL)
                    { 
                        if(current->next==NULL)
                        {    
                            cout<<"not found";
                            return -1;
                        }
                        else
                        {
                            previous=current;
                            current=current->next;
                        }
                    }
                    previous->next=current->next;
                    delete current;
                    cout<<"required data has been deleted"<<endl;}                
             }
        return 0;
        }

        int main() 
        {
            Node *head, *tail;
            head = NULL;
            tail = NULL; 
            int choice = 0;
            while (1) { Sleep(2000);system("cls");
                cout << "n ***************** MAIN MENU *****************" << endl
                    << " Press 1. Enter new entry " << endl
                    << " Press 2. view all entry " << endl
                    << " Press 3. Delete an entry " << endl
                    << " Press 4. Search the entry " << endl
                    << " Press 5. delete all entries " << endl
                    << " Press 6: To Exit"
                    << "n --------------------------------------------- " << endl
                    << "Your Choice :";
                cin >> choice;

        switch (choice) 
        {
                case 1:
                    Link_List_Input(head, tail);
                    cout<<"nnttSaving Data ";
                    {Sleep(1000);
                    cout<<" .";}
                    break;
                case 2:
                    Print_Link_List(head,tail);
                break;
                case 3:
                    Delete_Node_Contents(head);
                break;
                case 4:        
                Search_In_List(head,tail);
                break;
                case 5:
                DeleteAll(head,tail);
                break;
                case 6:
                cout << " n Exiting .... " << endl;
                return 0;
                default:
                cout << "n Invalid Option, Please use any of the listed options"
                << endl;
                }
            }
        } ]

Thank you.

3
Contributors
3
Replies
17
Views
1 Year
Discussion Span
Last Post by khaled02
1

I reckon that you'll get rid of some of your compilation errors by correcting lines like this:

if (head == NULL >> tail == NULL) 

I think that you just want something like:

if ( ! head && ! tail )
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