5:48 PM aamu.blackboard.com 8496 .. Courses Content Data Structure using Dynamic

Question

5:48 PM aamu.blackboard.com 8496 .. Courses Content Data Structure using Dynamic Memory Allocation Attached Files: D Data Structure using Dynamic Memory Allocation.pdf (134.251 KB) Please use the above Data Structure using Dynamic Memory allocation code and create a program (you write the necessary main method to this code) that does the following: 1) has a Menu which gives the user choices and based on the User choice does the task f either adding and item, deleting an item or Exiting the program 2) keeps the program running until the user chooses to Exit. DUE: on or before 11:00 am April 17 2018 via email to me with the subject line "CS215 Dynamic Memory Allocation"

Explanation / Answer

// just i write the one case for demo .it will ask until you enter the exit choice.write the code for delete and printitems

and call the switch case the program automatically works

// i write the code for only Add item in main menu and what you asked in the question

solution:

#include<iostream>

#include<string>

using namespace std;

typedef string itemType;

struct nodeType;

typedef nodeType *nodeptr;

struct nodeType

{

itemType item;

nodeptr next;

};

nodeptr front=NULL;

nodeptr rear=NULL;

void additem()

{

itemType newItem;

cout<<"enter the lastname of the customer"<<endl;

cin>>newItem;

nodeptr newptr=new nodeType;

newptr->item=newItem;

newptr->next-NULL;

if(front==NULL)

{

front=rear=newptr;

}else

{

rear->next=newptr;

rear=newptr;

}

}

void printItems()

{

nodeptr itemptr=front;

nodeptr tempptr=itemptr;

while(itemptr!=NULL)

{

cout<<itemptr->next;

itemptr=tempptr->next;

tempptr=itemptr;

}

}

int main()

{

int i=1;

while(i==1)

{

char grade ;

cout<<"enter your choice"<<endl;

cout<<" 'A' for add"<<endl;

cout<<" 'D' for delete"<<endl;

cout<<" 'E' for exit"<<endl;

cin>>grade;

switch(grade) {

case 'A' :

cout << "add item" << endl;

int no=0;

cout<<"enter how many nos you want to add in list"<<endl;

cin>>no;

for(int i=0;i<no;i++)

{

additem();

}

break;

case 'D' :

//write the code for deleteitem and call

cout << "for deleting the item" << endl;

break;

case 'E' :

cout << " try again" << endl;

exit(1);

break;

default :

cout << "Invalid " << endl;

  

}

}

}

output

// until the exit it will ask choice

enter your choice
'A' for add
'D' for delete
'E' for exit
A
add item
enter how many nos you want to add in list
2
enter the lastname of the customer
dfg
enter the lastname of the customer
dfg
enter your choice
'A' for add
'D' for delete
'E' for exit
A
add item
enter how many nos you want to add in list
3
enter the lastname of the customer
sdf
enter the lastname of the customer
dg
enter the lastname of the customer
dfg

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