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expense_report.h
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expense_report.h
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#include <iomanip>
#include <iostream>
#include <sstream>
#include <vector>
#include <string>
class ReportPrinter {
public:
virtual void print(const std::string& text) = 0;
};
enum ExpenseType { DINNER, BREAKFAST, LODGING };
class Expense {
public:
Expense(ExpenseType type, int amount) : type(type), amount(amount) {}
ExpenseType type;
int amount;
};
class ExpenseReport {
private:
std::vector<Expense> expenses;
public:
void add_expense(const Expense& expense) { expenses.push_back(expense); }
void print_report(ReportPrinter& printer)
{
printer.print("Expense Report");
printer.print("--------------");
double total = 0;
double meal_total = 0;
for (const Expense& expense : expenses) {
double surcharge = 0;
std::string name;
if (expense.type == DINNER) {
surcharge = expense.amount * 0.10;
name = "Dinner";
}
else if (expense.type == BREAKFAST) {
surcharge = expense.amount * 0.05;
name = "Breakfast";
}
else if (expense.type == LODGING) {
surcharge = expense.amount * 0.15;
name = "Lodging";
}
else {
name = "Other";
}
total += expense.amount + surcharge;
if (expense.type == DINNER || expense.type == BREAKFAST) {
meal_total += expense.amount + surcharge;
}
std::string meal_over_expenses_marker =
((expense.type == DINNER && expense.amount > 5000) ||
(expense.type == BREAKFAST && expense.amount > 1000))
? "X"
: "";
std::ostringstream oss;
oss << std::fixed << std::setprecision(2) << name << "\t" << expense.amount / 100.0
<< "\t" << meal_over_expenses_marker;
printer.print(oss.str());
}
printer.print("--------------");
std::ostringstream oss;
oss << "Meal Total: " << std::fixed << std::setprecision(2) << meal_total / 100.0 << "\n";
oss << "Total: " << std::fixed << std::setprecision(2) << total / 100.0;
printer.print(oss.str());
}
};