#include<iostream> #include<string> #include<iomanip> #include <fstream> using n

Question

#include<iostream>
#include<string>
#include<iomanip>
#include <fstream>
using namespace std;
struct menuItemType
{string menuItem;
double menuPrice;
bool selected;
};
int getdata(menuItemType[]);
void getOrder( menuItemType[],int);
void showMenu( menuItemType[],int);
void printCheck(menuItemType[],int );
int main()
{
int choices=0;
menuItemType menu[20];

cout<<"Welcome to my Restaurant My menu Item price ";
choices=getdata(menu);
getOrder(menu,choices);
printCheck(menu,choices);
system("pause");
return 0;
}
void printCheck(menuItemType order[],int items)
{int i;
double total=0,tax;
cout<<" Your Name Restaurant ";
for(i=0;i<items;i++)
if(order[i].selected)
{total+=order[i].menuPrice;
cout<<setw(16)<<left<<order[i].menuItem<<"$"<<
setprecision(2)<<fixed<<order[i].menuPrice<<endl;
}
cout<<" Total "<<"$"<<setprecision(2)<<fixed<<total<<endl;
tax=total*.08;
cout<<"Tax "<<"$"<<setprecision(2)<<fixed<<tax<<endl;
cout<<"Amount Due "<<"$"<<setprecision(2)<<fixed<<total+tax<<endl;
}
int getdata(menuItemType menu[])
{ifstream infile;
int i=0;
infile.open("menu.txt"); //open file
if(infile.fail()) //is it ok?
{ cout<<"file did not open please check it ";
system("pause");
system("exit");
}
do
{
getline(infile, menu[i].menuItem);
infile >> menu[i].menuPrice;
infile.get(); // to get of the eol character after the price
menu[i].selected=false;
i++;
} while (infile);

infile.close();
return i-1;
}
void getOrder(menuItemType menu[],int choices)
{int n;
showMenu(menu,choices);
cout<<"Enter your order item number: ";
cin>>n;
while(n!=choices+1)
{
while(n<1||n>9)
{cout<<"invalid item number ";
cout<<"Enter order item number: ";
cin>>n;
}
menu[n-1].selected=true;
cout<<"Enter order item number: ";
cin>>n;
}
}
void showMenu(menuItemType a[],int n)
{int i;
for(i=0;i<n;i++)
{cout<<i+1<<". "<<setw(16)<<left<<a[i].menuItem<<"$"<<setprecision(2)<<fixed<<a[i].menuPrice<<endl;
}
cout<<i+1<<". Finished Ordering ";
}

Explanation / Answer

// in this function

void getOrder(menuItemType menu[],int choices)
{int n;
showMenu(menu,choices);
cout<<"Enter your order item number: "; //you are hung up here.....
cin>>n;                                      //you have to feed the value of 'n' to run the program
while(n!=choices+1)
{
while(n<1||n>9)
{cout<<"invalid item number ";
cout<<"Enter order item number: ";
cin>>n;
}
menu[n-1].selected=true;
cout<<"Enter order item number: ";
cin>>n;
}

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