Stock Market Order Processing System

A C++ implementation of a simplified stock market order matching system. The program processes buy and sell orders for a single stock, handling both limit orders and market orders according to price-time priority rules.

Features

Support for both market and limit orders
Price-time priority matching
Partial order execution
Real-time order book display
Detailed execution logging
Support for order priorities and matching rules

Requirements

C++11 compatible compiler (g++ recommended)
make

Building the Project

Clone the repository and build using make:

git clone [repository-url]
cd stock-market-system
make

Running the Program

The program takes an input file as a command-line argument:

./stock_market tests/input1.txt

Input File Format

The input file should be formatted as follows:

First line: Initial trading price (floating-point number)
Subsequent lines: Order entries in the format:
```
orderID type quantity [price]
```
where:
- orderID: Unique identifier for the order
- type: 'B' for buy, 'S' for sell
- quantity: Number of shares
- price: Limit price (optional - if omitted, the order is treated as a market order)

Example input file:

1100.00
bob1    S    1    1200.00
cathie1 B    1000
elon    S    1000  1100.00

Output

The program produces two types of output:

Console display: Shows the current state of the order book after each order
Output file: Records all executions and unexecuted orders (named output*.txt corresponding to input*.txt)

Project Structure

main.cpp: Entry point and file I/O handling
Order.h/cpp: Order class definition and implementation
OrderBook.h/cpp: OrderBook class for order processing and matching
Makefile: Build configuration
.gitignore: Git ignore rules

Cleaning up

To remove compiled files and outputs:

make clean

Order Matching Rules

Market orders have higher priority than limit orders
For limit orders:
- Buy orders: Higher price has higher priority
- Sell orders: Lower price has higher priority
When prices are equal, earlier orders have priority
Orders can be partially executed

License

[Your chosen license]

Contributing

[Your contribution guidelines if applicable]

claeusdev/stoccked