NEED HELP FIXING THE PROGRAM
I can't figure out how to fix the loop for the program to work correctly and for it to display right..Please
help..
DrinkMachineInventory.txt-
Coca-Cola 0.75 20
Root Beer 0.75 20
Sprite 0.75 20
Spring Water 0.80 20
Apple Juice 0.95 20
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|
#include <iostream>
#include <string>
#include <fstream>
#include <iomanip>
#include <cctype>
using namespace std;
struct Machine
{
string name;
double cost;
int num;
};
void init(Machine []);
int menu(Machine[]);
void payment(double);
int main()
{
Machine drink[5];
int choice;
double made=0;
init(drink);
choice=menu(drink);
while(choice!=5)
{
payment(drink[choice].cost);
made+=drink[choice].cost;
drink[choice].num--;
choice=menu(drink);
}
cout<<"Today the machine has made $"<<setprecision(2)<<fixed<<made<<endl;
system("pause");
return 0;
}
void payment(double p)
{
double pay;
cout<<"Your drink costs $"<<setprecision(2)<<fixed<<p<<endl;
cout<<"Enter payment: ";
cin>>pay;
while(pay<0||pay>1.||pay<p)
{
cout<<"please insert the correct amount for your drink!\n";
cout<<"maximum payment is $1.00\n";
cout<<"Enter payment: ";
cin>>pay;
}
cout<<"Your change is: $"<<setprecision(2)<<fixed<<pay-p<<endl;
return;
}
void init(Machine d[])
{
ifstream infile("DrinkMachineInventory.txt");
if(infile.fail())
{
cout << "Could not find the file DrinkMachineInventory.txt \n";
cout << "Exiting the program\n";
exit(0);
}
int i=0;
char ch;
string word= "";
while(!infile.eof())
{
word= "";
ch = infile.get();
while(true)
{
if(isdigit(ch) || ch == '\n')
break;
else
word += ch;
ch = infile.get();
}
if(word != "")
{
d[i].name = word;
infile >> d[i].cost >> d[i].num ;
i++;
}
}
infile.close();
}
int menu(Machine d[])
{
int choice=8,i;
bool soldout=true;
while((choice<1||choice>6)||soldout)
{
soldout=false;
cout<<"Menu\n";
cout<<" Drink Cost\tleft\n";
for(i=0;i<5;i++)
{
cout<<i+1<<". "<<setw(17)<<left<<d[i].name<<"\t";
cout<<setprecision(2)<<fixed<<d[i].cost<…
}
cout<<"6. Exit\n";
cout<<"Enter Choice ";
cin>>choice;
if(choice<1||choice>6)
cout<<"invalid entry\n";
else
if(d[choice-1].num==0)
{cout<<"sold out\n";
soldout=true;
}
}
return choice-1;
}
|
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