Question

please write in C++ Write a program that uses a structure to store the following inventory data in a file: The data can be either read from a text file or the keyboard Item name (string) Quantity on hand(int) Wholesale cost(double) Retail Cost(double) The program should have a menu that allows the user to perform the following tasks: Add new records to the file Display any record in the file User will provide the name of the item or the first n letters of the name of the item Change any record in the file (Note: if this option chosen, then the whole record must be reentered even if the user wants to change only one or more fields) Display all records Prepare a report containing: The total wholesale value of the inventory The total retail value of the inventory The total quantity of all values in the inventory. Input validation: The program should not accept quantities or wholesale or retail costs less than 0.

Answer 1

Screenshot of the Code:

cout << "Enter item to be search "; cin search item; //start the for loop to display the record. for (int 1-0; 1 < store . size(); 1++) string itemname store [1]->Item-name ; = if (itemname.compare (0, search_item.size) searchitem)-0) - //Display the infomation of the record cout << "Name of the item: t" <<store[i]->Item name << endl <<"Quantity_on_hand t" <<store [i]-Quantity_on_hand << endl <<"Wholesale cost: t" < store[i]->wholesale cost << endl <<"Retail cost:It" <<store[i]->retail_cost << endl:

//Define the function Change_the_record to change a particular record. void Change the record (vector<Iteminformation*>& store) - - - //Prompt the user to enter the record to be changed. cout << "Enter the item name to change: "; //Declare a variable of type string string change_item_name: cin > c name //start the for loop to enter the record for (int i İ < store . size(); i++) hange_item //Change the item. if (change_item_name.compare (store [i]->Item_name) 0) -=

Sample Output:

Code to Copy:

//Include the header file for visual studio.

#include "stdafx.h"

//Include the header files.

#include <iostream>

#include <string>

#include <vector>

using namespace std;

//Declare the structure Item_information.

struct Item_information

{

     //Craete the variables.

     string Item_name;

     int Quantity_on_hand;

     double wholesale_cost;

     double retail_cost;

};

//Define the function Add_the_items to add the record.

void Add_the_items(vector<Item_information*>& store)

{

     //Declare the variable of bool type to check the cost.

     bool flag = false;

     //Create an object of the structure Item_information.

     Item_information* Item = new Item_information();

     //Begin the do while loop.

     do

     {

          //Prompt the user to enter the name.

          cout << "Enter the name of the Item. " << endl;

          cin >> Item->Item_name;

          //Prompt the user to enter the quantity.

          cout << "Enter the Quantity_on_hand. " << endl;

          cin >> Item->Quantity_on_hand;

          //Prompt the user to enter the wholesale cost.

          cout << "Enter the whole sale cost." << endl;

          cin >> Item->wholesale_cost;

          //Prompt the user to enter the retail cost.

          cout << "Enter the retail cost" << endl;

          cin >> Item->retail_cost;

          //check the wholesale cost and retail cost.

          if (Item->wholesale_cost < 0

|| Item->retail_cost < 0)

               flag = false;

          else flag = true;

     }

     while (!flag);

     store.push_back(Item);

}

//Define the function Single_record_display to display a single record.

void Single_record_display(vector<Item_information*>& store)

{

     //Declare a variable of type string.

     string search_item;

     //Enter the name of the record to search.

     cout << "Enter item to be search : ";

     cin >> search_item;

     //Start the for loop to display the record.

     for (int i = 0; i < store.size(); i++)

     {

          string itemname = store[i]->Item_name;

if (itemname.compare(0, search_item.size(),

search_item) == 0)

          {

               //Display the infomation of the record.

               cout << "Name of the item : \t"

<< store[i]->Item_name << endl

                     << "Quantity_on_hand : \t"

                     << store[i]->Quantity_on_hand << endl

                     << "Wholesale cost : \t"

                     << store[i]->wholesale_cost << endl

                     << "Retail cost : \t"

                     << store[i]->retail_cost << endl;

          }

     }

}

//Define the function Display_all-records to display all records.

void Display_all_records(vector<Item_information*>& store)

{

     cout << "All the entered recordes are : " << endl;

     //Begin the loop for displaying all records.

     for (int i = 0; i < store.size(); i++)

     {

          //Display the infomation of the record.

          cout << "Name of the item : \t"

               << store[i]->Item_name << endl

               << "Quantity_on_hand : \t"

               << store[i]->Quantity_on_hand << endl

               << "Wholesale cost : \t"

               << store[i]->wholesale_cost << endl

               << "Retail cost :   \t"

               << store[i]->retail_cost << endl;

     }

}

//Define the function Change_the_record to change a particular record.

void Change_the_record(vector<Item_information*>& store)

{

     //Prompt the user to enter the record to be changed.

     cout << "Enter the item name to change: ";

     //Declare a variable of type string.

     string change_item_name;

     cin >> change_item_name;

     //Start the for loop to enter the record.

     for (int i = 0; i < store.size(); i++)

     {

          //Change the item.

          if (change_item_name.compare(store[i]->Item_name)

== 0)

          {

               //Change the name and other specifications.

               cout << "Name of the change item : \t";

               cin >> store[i]->Item_name;

               cout << "Quantity_on_hand : \t";

               cin >> store[i]->Quantity_on_hand;

               cout << "Wholesale cost : \t";

               cin >> store[i]->wholesale_cost;

               cout << "Retail cost : \t";

               cin >> store[i]->retail_cost;

          }

     }

}

//Define the function Record_report to prepare the report.

void Record_report(vector<Item_information*>& store)

{

     cout << "Report " << endl;

     //Declare the variables and initialize it to 0.

     int total_Quantity = 0;

     double total_Wholesale_cost = 0;

     double total_Retail_cost = 0;

     //Begin the loop.

     for (int i = 0; i < store.size(); i++)

     {

          //Compute the total qualtity, wholesale_cost

          //and the retail_cost.

          total_Quantity += store[i]->Quantity_on_hand;

          total_Wholesale_cost += store[i]->wholesale_cost;

          total_Retail_cost += store[i]->retail_cost;

     }

     //Display the report.

     cout << "Overall report of the inventory " << endl;

     cout << " Total Quantity : "

          << total_Quantity << endl;

     cout << " Total WholesaleCost : "

          << total_Wholesale_cost << endl;

     cout << " Total RetailCost : "

          << total_Retail_cost << endl;

}

//Menu_of_tasks function to display the menu.

void Menu_of_tasks()

{

     cout << endl;

     //Menu of different tasks.

     cout << "Choose the tasks." << endl;

     //For exit the program.

     cout << "For Exit : 0" << endl;

     //For adding new records.

     cout << "Adding_New_Records : 1" << endl;

     //Display a single record entered.

     cout << "Display a single record : 2" << endl;

     //For display all the entered records entered till

//now.

     cout << "Display all the records : 3" << endl;

     //For changing the record.

     cout << "Change the records : 4" << endl;

     //Report of all the records entered.

     cout << "Report of the records : 5" << endl;

}

//Begin the main() function.

int main()

{

     vector<Item_information*> store;

     //Declare and initialize the variable choice.

     int choice = 1;

     do

     {

          //Call the function menu();

          Menu_of_tasks();

          //Input the choice.

          cin >> choice;

          //Start the switch case.

          switch (choice)

          {

               //Add the records to the inventory.

          case 1:

               //Call the function Add_the-items().

               Add_the_items(store);

               break;

               //Display the single record.

          case 2:

               //Call the function Single_record_display()

               Single_record_display(store);

               break;

               //Display all records.

          case 3:

               //Call the function Display_all-records().

               Display_all_records(store);

               break;

               //Change the record in the inventory.

          case 4:

               //Call the function Change_the_record().

               Change_the_record(store);

               break;

               //Prepare report of the inventory.

          case 5:

               //Call the function Record_report().

               Record_report(store);

               break;

          }

     } while (choice != 0);

}