CS50x-Finance

Introduction

This is one of the assignments provided in CS50x - Introduction to Computer Science.

The goal of the exercise is to:

• Implement a website that allows users to "buy" and "sell" stock with the following functions:
• Complete the implementation of a registration system, enabling users to register for an account.
• Complete the implementation of a quote feature, allowing users to look up the current price of a stock.
• Complete the implementation of a buying system, enabling users to buy stocks.
• Complete the implementation of an index page to display an HTML table summarizing which stocks the logged-in user owns, how many shares, the current price of each stock, and the total value of each holding (i.e., shares times price). Also display the user's current cash balance and a grand total (i.e., the total value of stocks plus cash).
• Complete the implementation of a selling system to allow users to sell shares of stocks they own.
• Complete the implementation of a history page that displays an HTML table summarizing all of a user’s transactions, showing each buy and sell action.

In addition to the required functions, I added some extra features to the website:

• Allow users to change their password.
• Allow users to add more cash to their account.

For more information, click here.

Built With

• HTML for website structure.
• Flask for backend development.
• Bootstrap for design.
• IEX API to fetch real-time stock prices.
• sqlite3 for storing user information (username, hashed passwords) and transaction records (bought or sold stocks).

Website

After registering, each user will have a default cash balance of $10,000.

• Login Page:

• Register Page:

• Index Page: This is the homepage of the website, which also contains the history of the user's transactions.

• Quote Page (Enter the stock symbol to check the stock info):

• Quoted Page (Displays the info of the entered stock symbol):

• Buy Page (Enter the stock symbol and the number of shares to buy):

• Bought Page (The bought stock is displayed in the user's history):

• Sell Page (Select the stock you own from the drop-down list and enter the number of shares to sell):

• Sold Page (The sold stock is displayed in the user's history):

• History Page (Shows all user actions, such as buy and sell transactions):

• Add Cash Page:

• Added Cash Page:

• Change Password (Allows users to change their password, but the new password cannot be the same as the current one):

References

• Bootstrap
• W3School
• Stack Overflow