Restaurant Menu.

#include<iostream>

#include<string>

using namespace std;

int main(){

string order;

int quantity,price,pay,change,bill;

cout<<"Order The Below"<<endl;

cout<<"Burgur = 30$ (B/b for burgur)"<<endl;

cout<<"Fries = 10$ (F/f for fries)"<<endl;

cout<<"Drink = 5$ (D/d for drink)"<<endl;

cin>>order;

if(order=="B"||order=="b")

price=30;

else if(order=="F"||order=="f")

price=10;

else if(order=="D"||order=="d")

price=5;

else 

cout<<"Invalid Order"<<endl;

cout<<"How Many? "<<endl;

cin>>quantity;

bill=price*quantity;

cout<<"Pay Your Bill = "<<bill<<endl;

cout<<"Payment Please "<<endl;

cin>>pay;

change=pay-bill;

if(change<0)

cout<<"Invavlid Amount"<<endl;

else

cout<<"Your Change Is = "<<change<<endl;

return 0;

}