Answer to Question #210030 in C++ for kilo

Question

Store Management System project with 3 classes

Answer 1

#include <iostream>
#include <fstream>
#include <string.h>
#include <stdio.h>
#include <conio.h>//Use getch();
using namespace std;
 
 
class Goods       
{
public:
	Goods()
		  {
		  }
	int kind;
	char name[20];                    
	char Id[20];
 
 
	float price;	
	
	int amount;		
	Goods * Next;
	friend ostream& operator<<(ostream& out,Goods& obj)
	{
		out<<obj.Id<<obj.name<<obj.amount<<obj.kind;
	}
	friend istream& operator>>(istream& in,Goods& obj)
	{
		in>>obj.Id>>obj.name>>obj.amount>>obj.kind;
	}
	void InputAll()
	{
		
		InputName();
		InputKind();
		InputID();
		InputOther();
 
	}
	void InputKind()
	{
		 Cout<<"\t\tPlease select the category: ";cin>>kind;
	}
	void InputName()
	{
		 Cout<<"\t\tPlease enter the name of the product: "; cin>>name;
	}
	void InputID()
	{	
		 Cout<<"\t\tPlease enter the product number: "; cin>>Id;
	}
	void InputBuyprice()
	{
		 Cout<<"\t\tPlease enter the unit price of the product:"; cin>>price;
	}
 
	void InputAmount()
	{
		 Cout<<"\t\tPlease enter the product inventory:"; cin>>amount;
	}
	void InputOther()
	{
		 Cout<<"\t\tPlease enter the price of the product:"; cin>>price;
	     Cout<<"\t\tPlease enter the quantity in stock:"; cin>>amount;	
	}  
	void ReadFile(istream & in)
	{
		in>>name>>kind>>Id>>price>>amount;
	}
	void Show()
	{
 
		 Cout<<" Trade name: "<<name<<endl<<" Category: "<<kind<<endl<<"Number: "<<Id<<endl<<" Price"<<price<<endl< <"Commodity Stock: "<<amount<<endl<<endl<<endl;
	}
};
 
 
class Goodsmanager : public Goods           
	{
	public:
		Goodsmanager();
		~Goodsmanager();
		void showMenu(int n);
		void Find();
		void Save();
		void ModifyItem();
		void RemoveItem();
		void Swap(Goods *,Goods *);
		void Sort();
		void delgoods();
		//void Chack();
		int ListCount();
		void Display()
		{
			system("cls");
			i=0;
			for(Goods * p=Head->Next;p!=End;p=p->Next)
			{
				p->Show();
				i++;
			}
			 Cout<<" has a total of "<<i<<" products "<<"\n"<<endl;	
			 Cout<<"Enter any character! Continue...";
			getch();
		}
		 Void AddItem()//Enter product information from the keyboard
		{
			system("cls");
			End->InputName();
			showMenu(1);
			End->InputKind();
			do
			{
				End->InputID();
 
			}while(FindID(End->Id));
 
			End->InputOther();
			
			End->Next = new Goods;
			End=End->Next;
			 Cout<<" added successfully!"<<endl;
			Save();
			 Cout<<"Enter any character! Continue...";
			getch();
		}
	private:
		Goods * Head,* End;
		int i;
		ifstream in;
		ofstream out;
		Goods *FindItem(char * name)
		{
			 For(Goods * p=Head;p->Next!=End;p=p->Next)//If the match succeeds, the previous pointer is returned. If it is unsuccessful, it returns empty.
				if(!strcmp(p->Next->name,name))return p;
				return NULL;
		}
		Goods *FindID(char * Id)
		{
			 For(Goods * p=Head;p->Next!=End;p=p->Next)//If the match succeeds, the previous pointer is returned. If it is unsuccessful, it returns empty.
				if(!strcmp(p->Next->Id,Id))return p;
		 	 return NULL;
		}
	};
	
 Void Goodsmanager::Swap(Goods *p1, Goods *p2) //Exchange data for two items
	{
		Goods *temp=new Goods; 
		strcpy(temp->name,p1->name);
		temp->kind=p1->kind;
		strcpy(temp->Id,p1->Id);
		temp->price=p1->price;
		temp->amount=p1->amount;
 
		
		strcpy(p1->name,p2->name);
		p1->kind=p2->kind;
		strcpy(p1->Id,p2->Id);
 
		p1->price=p2->price;
		p1->amount=p2->amount;
 
		
		strcpy(p2->name,temp->name);
		p2->kind=temp->kind;
		strcpy(p2->Id,temp->Id);
 
		p2->price=temp->price;
		p2->amount=temp->amount;
 
	}
 
	 Man ̅ Goods ̅ ̅ ̅ ̅ Goods Goods ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅
	{
		Head=new Goods;
		Head->Next=new Goods;
		End=Head->Next;
		in.open("cangku.txt");
		if(!in)
			 Cout<<" has no inventory"<<endl;
		else
		{
			while(!in.eof())
			{
				End->ReadFile(in);
				if(End->name[0]=='\0')break;
				End->Next=new Goods;
				End=End->Next;
			}
			in.close();
			 Cout<<"\t\t\t\tRead the product information successfully!"<<"\n"<<endl;
		}
	}
	
	 Void Goodsmanager::showMenu(int n)// Menu ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅
 
	{
		switch(n)
		{
		case 1:
			{
			cout<<"********************************************************************************\n"
				 <<" 1. Home Appliances 2. Cosmetics 3. Daily Necessities 4. Beverages \n"
				<<"********************************************************************************\n"<<endl;
			break;}
		case 2:
			{
			system("cls");
			 Cout<<"*********************** Store Warehouse Management System******************* ****"<<endl;
			 Cout<<"*********************** 1. Adding items ********************* ****"<<endl;
			 Cout<<"*********************** 2. Display items ********************* ****"<<endl;
			 Cout<<"*********************** 3. Sorting items******************* ****"<<endl;
			 Cout<<"*********************** 4. Find the item******************* ****"<<endl;
			 Cout<<"*********************** 5. Delete the item******************* ****"<<endl;
			 Cout<<"*********************** 6. Modify the item******************* ****"<<endl;
			 Cout<<"*********************** 7. Save product information ****************** *****"<<endl;
			 Cout<<"*********************** 0. Exit the system******************* ****"<<endl;
		
			 Cout<<"\t\t\n\t\t\t\t Please select: 0-8"<<endl;
			break;}
		case 3:
			{
			system("cls");
			cout<<"********************************************************************************\n"
				<<"\t 1. Modify the product name 4. Modify the price \t\t\n"		
				 <<"\t 2. Modify the category 5. Modify the amount of remaining goods\t\t\n"		
				 <<"\t 3. Change number \t\t\n" 
				 <<"\t\t\t\t10.Modify all \n"			
				<<"********************************************************************************"<<endl;
			 Cout<<"\t\t\n\t\t\t\t Please select: 0-10"<<endl;
 
			break;
			}
		case 4:
			{
			system("cls");
			cout<<"********************************************************************************\n"
				 <<"\t 1. Sort by item price 2. Sort by stock quantity \n"		
				<<"********************************************************************************"<<endl;
			 Cout<<"\t\t\n\t\t\t\t Please select: 0-3"<<endl;
 
			break;
			}
		case 5:
			{
				system("cls");
				cout<<"\n\t\t        *********************************\n";
				 Cout<<"\t\t ***** 1. Find by product name *****\n\t\t ***** 2. Find by product number *****";
				 Cout<<"\n\t\t *********************************\nPlease select: 0- 2";	 	
				break;
			}
		}
	}
 
 
	
	Goodsmanager::~Goodsmanager()          
	{
		//Save();
		for(Goods * temp;Head->Next!=End;)
		{
			temp=Head->Next;
			Head->Next=Head->Next->Next;
			delete temp;
		}
		delete Head,End;
	}
	
 
	void Goodsmanager::Find()      
	{
		system("cls");
		char name[20] ,Id[10];
		int x;
		Goods * p=NULL;
		showMenu(5);
		cin>>x;
		switch(x)
		{
		 Case 1:{cout<<"\t\tPlease enter the name of the item you are looking for:";cin>>name;
			if(p=FindItem(name))
			{
				p->Next->Show();
				 Cout<<"Enter any character! Continue...";
				getch();
			}
			else
			{
				 Cout<<"\t\tThe item with this name was not found!"<<'\n'<<endl;
				 Cout<<"Enter any character! Continue...";
				getch();
			}
			   }break;
		case 2:
			{
				 Cout<<"\t\tPlease enter the number of the item you are looking for: ";cin>>Id;
				if(p=FindID(Id))
				{
					p->Next->Show();
					 Cout<<"Enter any character! Continue...";
					getch();
				}
				else
				{
					 Cout<<"\t\tThe item with this number was not found!"<<'\n'<<endl;
					 Cout<<"Enter any character! Continue...";
					getch();
				}
			}break;
		}		
	}	
	
	 Void Goodsmanager::ModifyItem() //Modify product information
	{
		
		showMenu(3);
		int x;
		cin>>x;
		switch(x)
		{
			case 1:
			{
				char Id[20];
				Goods * p=NULL;
				 Cout<<"\t\tPlease enter the number of the item to be modified: ";cin>>Id;
				if(p=FindID(Id))
				{
					 Cout<<"\t\tThe information of the product has been found, please enter the new information!"<<endl;
 
					p->Next->InputName();
					 Cout<<" modified successfully!"<<endl;
					 Cout<<"Enter any character! Continue...";
					getch();
				}
				else
				{
					 Cout<<"\t\t Didn't find what you need!"<<endl;
					 Cout<<"Enter any character! Continue...";
					getch();
				}
				break;
			}
			case 2:
			{
				char Id[20];
				Goods * p=NULL;
				 Cout<<"\t\tPlease enter the number of the item to be modified: ";cin>>Id;
				if(p=FindID(Id))
				{
					 Cout<<"\t\tThe information of the product has been found, please enter the new information!"<<endl;
 
					p->Next->InputKind();
					 Cout<<" modified successfully!"<<endl;
					 Cout<<"Enter any character! Continue...";
					getch();
				}
				else
				{
					 Cout<<"\t\t Didn't find what you need!"<<endl;
					 Cout<<"Enter any character! Continue...";
					getch();
				}
				break;
			}
			case 3:
			{
				char Id[20];
				Goods * p=NULL;
				 Cout<<"\t\tPlease enter the number of the item to be modified: ";cin>>Id;
				if(p=FindID(Id))
				{
					 Cout<<"\t\tThe information of the product has been found, please enter the new information!"<<endl;
 
					p->Next->InputID();
					 Cout<<" modified successfully!"<<endl;
					 Cout<<"Enter any character! Continue...";
					getch();
				}
				else
				{
					 Cout<<"\t\t Didn't find what you need!"<<endl;
					 Cout<<"Enter any character! Continue...";
					getch();
				}
				break;
			}
			case 4:
			{
				char Id[20];
				Goods * p=NULL;
				 Cout<<"\t\tPlease enter the number of the item to be modified: ";cin>>Id;
				if(p=FindID(Id))
				{
					 Cout<<"\t\tThe information of the product has been found, please enter the new information!"<<endl;
 
					p->Next->InputBuyprice();
					 Cout<<" modified successfully!"<<endl;
					 Cout<<"Enter any character! Continue...";
					getch();
				}
				else
				{
					 Cout<<"\t\t Didn't find what you need!"<<endl;
					 Cout<<"Enter any character! Continue...";
					getch();
				}
				break;
			}
			case 5:
			{
				char Id[20];
				Goods * p=NULL;
				 Cout<<"\t\tPlease enter the number of the item to be modified: ";cin>>Id;
				if(p=FindID(Id))
				{
					 Cout<<"\t\tThe information of the product has been found, please enter the new information!"<<endl;
 
					p->Next->InputAmount();
					 Cout<<" modified successfully!"<<endl;
					 Cout<<"Enter any character! Continue...";
					getch();
				}
				else
				{
					 Cout<<"\t\t Didn't find what you need!"<<endl;
					 Cout<<"Enter any character! Continue...";
					getch();
				}
				break;
			}
		}	
	}
	
 
	void Goodsmanager::RemoveItem()         
	{
		system("cls");
		char Id[20];
		Goods * p=NULL,*temp=NULL;
		 Cout<<"\t\tPlease enter the number of the item to be deleted: "<<endl;cin>>Id;
		if(p=FindID(Id))
		{
			temp=p->Next;
			p->Next=p->Next->Next; 
			delete temp;
			 Cout<<"\t\t deleted successfully!"<<endl;
			 Cout<<"Enter any character! Continue...";
			getch();
		}
		else
		{
			 Cout<<"\t\t Didn't find what you need!"<<endl;
			Cout<<"Enter any character! Continue...";
			getch();
		}
	}
 
	 Int Goodsmanager::ListCount() //Count the total number of records in the current linked list, return an integer
	{
		if(! Head)
			return 0;
		int n=0;
		for(Goods * p=Head->Next;p!=End;p=p->Next)
		{
			n++;
		}
		return n;
	}
	
 
	void Goodsmanager::Sort()      
	{
		showMenu(4);
		int x;
		cin>>x;
		switch(x)
		{
			case 1:
			{
				system("cls");
				 Cout <<"\t\t sorting..."<<endl;
				cout<<"\n";
				Goods *p=NULL,*p1=NULL,*k=NULL;
				int n=Goodsmanager::ListCount();
				if(n<2) 
					return;
				for(p=Head->Next;p!=End;p=p->Next)
					for(k=p->Next;k!=End;k=k->Next)
					{
						if(p->price>k->price)
						{
							Goodsmanager::Swap(p,k);
						}
					}
				Display();
				 Out.open("price.txt");
				for(Goods *q=Head->Next;q!=End;q=q->Next)
				out<<q->name<<"\t"<<q->kind<<"\t"<<q->Id<<"\t"<<q->price<<"\t"<<q->amount<<'\n';	
				out.close();
				 Cout<<"Save information successfully"<<endl;
				 Cout <<"sort completed!"<<endl;
				getch();
				return;
			}
			case 2:
			{
				system("cls");
				 Cout <<"\t\t sorting..."<<endl;
				cout<<"\n";
				Goods *p=NULL,*p1=NULL,*k=NULL;
				int n=Goodsmanager::ListCount();
				if(n<2) 
					return;
				for(p=Head->Next;p!=End;p=p->Next)
					for(k=p->Next;k!=End;k=k->Next)
					{
						if(p->amount>k->amount)
						{
							Goodsmanager::Swap(p,k);
						}
					}
				Display();
				 Out.open("inventory.txt");
				for(Goods *q=Head->Next;q!=End;q=q->Next)
				out<<q->name<<"\t"<<q->kind<<"\t"<<q->Id<<"\t"<<q->price<<"\t"<<q->amount<<'\n';	
				out.close();
				 Cout<<"Save information successfully"<<endl;
				 Cout <<"sort completed!"<<endl;
				getch();
				return;
			}
 
		}
	}
	
	
	void Goodsmanager::Save()      
	{
		out.open("cangku.txt");
		for(Goods *p=Head->Next;p!=End;p=p->Next)
			out<<p->name<<"\t"<<p->kind<<"\t"<<p->Id<<"\t"<<p->price<<"\t"<<p->amount<<'\n';
			
			out.close();
			 Cout<<"Save information successfully"<<endl;
	}
	
	
	 In ( ( ̅ ̅ ̅ ̅ ( ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅
	{
		cout << "\t\t*****************************************" << endl;
		for(int i = 0; i < 3; i ++)
			cout<<"\t\t******************\t\t\t\t\t\t  ******************" << endl;
		 Cout<<"\t\t****************** Welcome to the warehouse merchandise management system****************** " << endl;
		for(int i = 0; i < 3; i++)
			cout<<"\t\t******************\t\t\t\t\t\t  ******************"<<endl;
		cout<<"\t\t*****************************************\n"<<endl;;
		Goodsmanager Grade;
		 Cout<<"\t\t\t\tPress any key to start...";
		getch();	
		int x;
		bool quit =false;
		while(!quit)
		{
			
 
			Grade.showMenu(2);
			cin>>x;
			switch(x)
			{
			case 0:{quit=true;break;}
			case 1:{Grade.AddItem();break;}
			case 2:{Grade.Display();break;}
			case 3:{Grade.Sort();break;}
			case 4:{Grade.Find();break;}
			case 5:{Grade.RemoveItem();break;}
			case 6:{Grade.ModifyItem();break;}
			case 7:{Grade.Save();break;}
			}
		}
 
		return 0; 
	}