C Bank is a simple banking system implemented in C language. It allows users to perform basic banking operations such as checking balance, depositing money, withdrawing money, and changing PIN.

• Set PIN: Users can set their 4-digit PIN when they first open the application.
• Check Balance: Users can check their current account balance.
• Deposit Money: Users can deposit money into their account.
• Withdraw Money: Users can withdraw money from their account.
• Change PIN: Users can change their PIN for security purposes.

gcc -o bank main.c menu.c operations.c pin.c && ./bank

• When you first run the application, you will be prompted to set your PIN.
• After setting the PIN, you can use the main menu to perform banking operations.
• Follow the on-screen instructions to navigate through the menu and perform actions.