Question

C++ Linkedlist

Create a food menu so the customer can see what we are selling, if the users place order that not on the menu, prompt the users to enter again. Food code and food must be matched when users enter.

Answer 1

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#include<iostream> using namespace std; class Food { public: int code; string name; Food* next; }; class Menu:public Food { Food *first,*last; public: Menu() { first=NULL; last=NULL; } void insert(int fcode,string fname); void search(); }; void Menu::insert(int fcode,string fname) { Food *prev,*cur; prev=NULL; cur=first; int count=1,pos,ch,n; Food *temp=new Food; temp->code=fcode; temp->name=fname; temp->next=NULL; temp->next=first; first=temp; } void Menu::search() { int value,pos=0; bool flag=false; if(first==NULL) { cout<<"Menu is Empty"; return; } cout<<"Enter the Food code to be Searched:"; cin>>value; Food *temp; temp=first; while(temp!=NULL) { pos++; if(temp->code==value) { flag=true; cout<<"Food "<<temp->name<<" is Found at "<<pos<<" Position"<<endl; return; } temp=temp->next; } if(!flag) { cout<<"Food "<<value<<" not Found in the Menu, Try Again!!!"<<endl; this->search(); } } int main() { Menu m; m.insert(1,"tea"); m.insert(2,"water"); m.insert(3,"breakfast"); m.insert(4,"lunch"); m.insert(5,"dinner"); m.search(); return 0; }