problem-c++

**Problem Statement: Smart Expense Tracker**

Create a C++ console application that helps users track and categorize their daily expenses with intelligent spending analysis.

**Requirements:**
- Accept expense entries with amount, description, and category (food, transport, entertainment, utilities, other)
- Store expenses in a text file for persistence
- Display current month's expenses grouped by category
- Calculate and show total spending and category-wise breakdown with percentages
- Identify the highest spending category and suggest if spending exceeds a user-defined monthly budget
- Allow users to view expenses from a specific date range
- Provide a simple menu-driven interface

**Key Features to Implement:**
- File I/O for data persistence (CSV format)
- Basic data structures (vectors, structs)
- String manipulation and parsing
- Date handling (basic comparison)
- Simple mathematical calculations for percentages and totals
- Input validation and error handling

**Sample Output:**
```
=== Expense Summary for June 2025 ===
Food: $245.50 (35%)
Transport: $120.00 (17%)
Entertainment: $95.25 (14%)
...
Total Spent: $698.75
Budget Status: $301.25 remaining of $1000 budget
Highest Category: Food
```

This project involves core C++ concepts like file handling, data structures, and user interaction while being practical and achievable within an hour with AI assistance.