a. constructor/destructor b. empty() –check if the list isempty c. insertAtPos()

Question

a. constructor/destructor

b. empty() –check if the list isempty                 

c. insertAtPos() – insert at a particular position

d. deletePos() – delete the node at particularposition

e. display()- Display the data in the list along with theposition.         

- overload the display() function, such that if position isspecified, the corresponding no is returned, else the complete listwith position is returned.

f. Writelistdatatofile()- When this function is calledwrite the data in the list along with their positions(position inthe list) in a file.

Explanation / Answer

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

class Link_List{

private:
static float list[9]; // C++ Array of type float with maximum size= 10

public:
Link_List();            //Constructor for the C++ tutorial
~Link_List();            //destructor for the C++ Tutorial
void empty(void);        //checkif the list is empty
void insertAtPos(int x, float val); //– insert at aparticular posi
void deletePos(int x);   //– delete the node atparticular position
void display(void);      //- Display thedata in the list along with theposition.         
void display(int x);     //overloadeddisplay
void Writelistdatatofile(); //- When this function is calledwrite the data in the list along with their positions(position inthe list) in a file.
};

Link_List::Link_List(void)
{
     //list[]=new float;

    for(int i=0;i<=9;i++)
  {
   list[i]=0;
  }
}

Link_List::~Link_List(void)
{
      delete list;
}

void Link_List::display(void)
{
      for(int i=0;i<=9;i++)
  {
   cout<<"On Index "<<i<<""<<list[i]<<" ";
  }
}

voidLink_List::display(int x)
{
      cout<<"On Index "<< x<<" "<<list[x]<<" ";
}

voidLink_List::deletePos(int x)
{
   list[x]=0;
}

voidLink_List::insertAtPos(int x, float val)
{
   list[x]=val;
}

void Link_List::Writelistdatatofile(void)
{
ofstream myfile;
myfile.open("example.txt"); // opens the file
if( !myfile ) { // file couldn't be opened
           cerr << "Error: file could not be opened" << endl;
           exit(1);
           }
    for(int i=0;i<=9;i++)
{
     myfile<<"On Index"<<i<<" "<<list[i]<<" ";
  }
  myfile.close();
}

void main()
{

//you can use this classin this main body
//

}

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