The Wings Road

/*
 * FileReaderWriter.java
 *
 * Created on October 2, 2007, 6:16 PM
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */
import java.io.*;
/**
 *
 * @author Admin
 */
public class FileReaderWriter {
   
    /** Creates a new instance of FileReaderWriter */
    public FileReaderWriter() {
    }
   
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) throws IOException {
        // TODO code application logic here
                File inputFile = new File("farrago.txt");
        File outputFile = new File("outagain.txt");
       
        FileReader in = new FileReader(inputFile);
        FileWriter out = new FileWriter(outputFile);
        int c;
       
        while ((c = in.read()) != -1){
            System.out.println(c);
            out.write(c);
        }
       
        System.out.println("FileReader is used to read a file and FileWriter is used for writing.");
       
        in.close();
        out.close();

    }
   
}

/*
 * FileInputOutputStream.java
 *
 * Created on October 2, 2007, 6:03 PM
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */
import java.io.*;
/**
 *
 * @author Admin
 */
public class FileInputOutputStream {
   
    /** Creates a new instance of FileInputOutputStream */
    public FileInputOutputStream() {
    }
   
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) throws IOException {
        // TODO code application logic here
        File inputFile = new File("farrago.txt");
        File outputFile = new File("outagain.txt");
       
        FileInputStream in = new FileInputStream(inputFile);
        FileOutputStream out = new FileOutputStream(outputFile);
        int c;
       
        while ((c = in.read()) != -1){
            System.out.println(c);
            out.write(c);
                    }
       
        System.out.println("FileInputStream is used to read a file and FileOutPutStream is used for writing.");
       
        in.close();
        out.close();

    }
   
}

#include <iostream>
#include <conio.h>
using namespace std;

struct node
{
    int num;
    node *lLink;
    node *rLink;
};
void createNode(node *&root);
void connectNode(node *newNode,node *current);
void preOrder(node *current);
void menu(int& choice);

main()
{
    int choice;
    int num;
    node *root;            
    node *parent;          
    node *current;
    node *sNode;
    node *temp;            
    root = NULL;
    do
    {
        menu(choice);
        switch(choice)
        {
            case 1:
                createNode(root);
                getch();
                break;
            case 2:
                cout<<"Pre-order Traversal"<<endl<<endl;
                preOrder(root);
                getch();
                break;
        }
       
    }while(choice!=24);
}
void menu(int& choice)
{
    system("cls");
    cout<<"[1] Add New Node"<<endl
        <<"[2] Display"<<endl;
     cout<<"Enter your choice:";
    cin>>choice;
}
void createNode(node* &root)
{
    node *newNode;
    int num;
   
    newNode=new node;
    newNode->lLink=NULL;
    newNode->rLink=NULL;
    cout<<"Enter number:";
    cin>>num;
    newNode->num=num;
   
    if(root==NULL){root=newNode;cout<<"root";}
    else connectNode(newNode,root);
}
void connectNode(node *newNode,node *current)
{
    if(newNode->num > current->num)
    {
        if(current->rLink!=NULL)
        {
            cout<<"Move to the right of "<<current->num<<endl;
            connectNode(newNode,current->rLink);
        }
        else
        {
            current->rLink=newNode;
            cout<<newNode->num<<" is connected to the right of "<<current->num<<endl;
        }
    }
    else
    {
        if(current->lLink!=NULL)
        {
            cout<<"Move to the left of "<<current->num<<endl;
            connectNode(newNode,current->lLink);
        }   
        else
        {
            current->lLink=newNode;
            cout<<newNode->num<<" is connected to the left of "<<current->num<<endl;
        }   
    }
}
void preOrder(node* current)
{
    if(current->lLink!=NULL)
        cout<<current->num<<" has a left child of "<<current->lLink->num<<endl;
    else cout<<current->num<<" has no left child."<<endl;
   
    if(current->rLink!=NULL)
        cout<<current->num<<" has a right child of "<<current->rLink->num<<endl;
    else cout<<current->num<<" has no right child."<<endl;
    //cout<<current->num <<" ";
   
   
    if(current->lLink!=NULL)preOrder(current->lLink);
    if(current->rLink!=NULL)preOrder(current->rLink);
}