Notes

#include <iostream>
#include <map>
#include <string>

// Enum for expense categories
enum class ExpenseCategory { GROCERIES, RENT, UTILITIES, ENTERTAINMENT, OTHER };

// Function to display expense categories
void displayExpenseCategories() {
std::cout << "Expense Categories:" << std::endl;
std::cout << "1. Groceries" << std::endl;
std::cout << "2. Rent" << std::endl;
std::cout << "3. Utilities" << std::endl;
std::cout << "4. Entertainment" << std::endl;
std::cout << "5. Other" << std::endl;
}

// Function to get expense category from user input
ExpenseCategory getExpenseCategory() {
int choice;
std::cout << "Enter the number of your expense category: ";
std::cin >> choice;

switch (choice) {
case 1:
return ExpenseCategory::GROCERIES;
case 2:
return ExpenseCategory::RENT;
case 3:
return ExpenseCategory::UTILITIES;
case 4:
return ExpenseCategory::ENTERTAINMENT;
case 5:
return ExpenseCategory::OTHER;
default:
std::cerr << "Invalid choice. Defaulting to OTHER." << std::endl;
return ExpenseCategory::OTHER;
}
}

// Struct to represent an expense
struct Expense {
std::string name;
ExpenseCategory category;
double amount;
};

// Function to get expense details from user input
Expense getExpenseDetails() {
Expense expense;
std::cout << "Enter expense name: ";
std::cin.ignore(); // Ignore newline character left in input buffer
std::getline(std::cin, expense.name);
displayExpenseCategories();
expense.category = getExpenseCategory();
std::cout << "Enter expense amount: ";
std::cin >> expense.amount;

return expense;
}

// Class to manage personal finances
class PersonalFinanceManager {
public:
// Constructor to initialize monthly income
PersonalFinanceManager(double monthlyIncome) : monthlyIncome(monthlyIncome) {}

// Function to add an expense
void addExpense() {
Expense expense = getExpenseDetails();
expenses[expense.category].push_back(expense);
}

// Function to display expenses
void displayExpenses() {
for (const auto &pair : expenses) {
std::cout << "Category: ";
switch (pair.first) {
case ExpenseCategory::GROCERIES:
std::cout << "Groceries" << std::endl;
break;
case ExpenseCategory::RENT:
std::cout << "Rent" << std::endl;
break;
case ExpenseCategory::UTILITIES:
std::cout << "Utilities" << std::endl;
break;
case ExpenseCategory::ENTERTAINMENT:
std::cout << "Entertainment" << std::endl;
break;
case ExpenseCategory::OTHER:
std::cout << "Other" << std::endl;
break;
}

for (const auto &expense : pair.second) {
std::cout << "Name: " << expense.name << ", Amount: " << expense.amount
<< std::endl;
}
}
}

// Function to display monthly income
void displayMonthlyIncome() {
std::cout << "Monthly Income: " << monthlyIncome << std::endl;
}

private:
double monthlyIncome;
std::map<ExpenseCategory, std::vector<Expense>> expenses;
};

int main() {
double monthlyIncome;
std::cout << "Enter your monthly income: ";
std::cin >> monthlyIncome;

PersonalFinanceManager financeManager(monthlyIncome);

while (true) {
std::cout << "Personal Finance Manager" << std::endl;
std::cout << "1. Add Expense" << std::endl;
std::cout << "2. Display Expenses" << std::endl;
std::cout << "3. Display Monthly Income" << std::endl;
std::cout << "4. Exit" << std::endl;

int choice;
std::cout << "Enter your choice: ";
std::cin >> choice;

switch (choice) {
case 1:
financeManager.addExpense();
break;
case 2:
financeManager.displayExpenses();
break;
case 3:
financeManager.displayMonthlyIncome();
break;
case 4:
return 0;
default:
std::cerr << "Invalid choice. Please try again." << std::endl;
}
}

return 0;
}