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design class for linked list and include
constructor,destructor,insert option.
struct node
{
int node;
struct node &ptr;
}
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Answer Posted / ayushi rastogi
#include<iostream.h>
struct node
{
int data; // D.O.B. would be better
node *ptr;// Pointer to next node
};
node *start_ptr = NULL;
node *current; // Used to move along the list
int option = 0;
class linklist
{
public:
linklist()
{
start_ptr=NULL;
}
~linklist()
{
start_ptr=NULL;
}
public:
void add_node_at_end()
{ node *temp, *temp2; // Temporary pointers
// Reserve space for new node and fill it with data
temp = new node;
cout << "Please enter the data: ";
cin >> temp->data;
temp->ptr = NULL;
// Set up link to this node
if (start_ptr == NULL)
{ start_ptr = temp;
current = start_ptr;
}
else
{ temp2 = start_ptr;
// We know this is not NULL - list not empty!
while (temp2->ptr != NULL)
{ temp2 = temp2->ptr;
// Move to next link in chain
}
temp2->ptr = temp;
}
}
public:
void display_list()
{ node *temp;
temp = start_ptr;
cout << endl;
if (temp == NULL)
cout << "The list is empty!" << endl;
else
{ while (temp != NULL)
{ // Display details for what temp points to
cout << "Data : " << temp->data << " ";
if (temp == current)
cout << " <-- Current node";
cout << endl;
temp = temp->ptr;
}
cout << "End of list!" << endl;
}
}
};
void main()
{
linklist l;
start_ptr = NULL;
do
{
l.display_list();
cout << endl;
cout << "Please select an option : " << endl;
cout << "0. Exit the program." << endl;
cout << "1. Add a node to the end of the list."
<< endl;
cout << "2. Display." << endl;
cout << endl << " >> ";
cin >> option;
switch (option)
{
case 1 : l.add_node_at_end(); break;
case 2 : l.display_list(); break;
}
}
while (option != 0);
}
| Is This Answer Correct ? | 3 Yes | 0 No |
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Write a program to compute for numeric grades for a course. The course records are in a file that will serve as the input file. The input file is in exactly the following format: Each line contains a student's first name, then one space, then ten quiz scores all on one line. The quiz scores are in whole number and are separated by one space. Your program will take it input from this file and sends it output to a second file. The data in the output file will be exactly the same as the data in the input file except that there will be one additional number (of type double) at the end of each line. This number will be the average of the student's ten quiz scores. Use at least one function that has file streams as all or some of its arguments.
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