Question

Write a C++ code to print to the user a simple menu of a fast food restaurant. You should allow the user to select his/her preferred burgers and/or drinks and you should display the final bill to the user for payment. The user should be able to select more than one item. You should use the switch statement.

Answer 1

// Here is the tested and working CODE with attached output for your question :

#include<iostream>
#include<iomanip>
using namespace std;
int main(){
  
   // Arrays of Food Item and Respective Price
   const char *foodItems[] = {"Veg Burger","Non-Veg Burger","Diet Coke","Lime Water"};
   const double priceOfItems[] = {20.0, 40.0, 30.0, 10.12};
  
   // Variable to store the total bill
   double totalBill = 0.0;

   // Total number of items in the menu
   int totalItems = sizeof(foodItems)/sizeof(foodItems[0]);
  
   cout<< "Here is the Menu of the restaurant\n\n";
   cout<<left<<setw(10)<<setfill(' ')<<"Item No \t\t";
   cout<<left<<setw(20)<<setfill(' ')<< "Food Item \t\t";
   cout<<left<<setw(20)<<setfill(' ')<< "Price";

   cout<<endl<<endl;
   for(int i=0;i<totalItems;i++){
       cout<<left<<setw(10)<<setfill(' ')<<(i+1)<<" \t\t";
       cout<<left<<setw(20)<<setfill(' ')<<foodItems[i]<<" \t\t";
       cout<<left<<setw(20)<<setfill(' ')<<priceOfItems[i]<<endl;\
   }

   int choice;
   do {
       cout<<"Enter the item number you want to purchase and press 0 once done \n";
       cin>> choice;
       if(choice<0 || choice>(totalItems+1)){
           cout<<"Invalid Input. Please enter the item number correctly.";
           cin>>choice;
       }
      
       switch(choice){
           case 1:
               cout<<"Selected Item : "<<foodItems[0] <<" \t\t\t Price : "<<priceOfItems[0]<<endl<<endl;
               totalBill += priceOfItems[0];
               break;
           case 2:
               cout<<"Selected Item : "<<foodItems[1] <<" \t\t Price : "<<priceOfItems[1]<<endl<<endl;
               totalBill += priceOfItems[1];
               break;
           case 3:
               cout<<"Selected Item : "<<foodItems[2] <<" \t\t\t Price : "<<priceOfItems[2]<<endl<<endl;
               totalBill += priceOfItems[2];
               break;
           case 4:
               cout<<"Selected Item : "<<foodItems[3] <<" \t\t\t Price : "<<priceOfItems[3]<<endl<<endl;
               totalBill += priceOfItems[3];
               break;
           default :
               break;

       }
   } while(choice != 0);
   cout<<"\nTotal Bill = "<<totalBill<<endl;
}

//SAMPLE OUTPUTS