The Simple Calculator program in C offers a user-friendly interface to perform basic arithmetic operations. Key features include:

1. Menu-Driven Interface: Users can select operations from a clear menu, including Add, Subtract, Multiply, Divide, and Exit.
2. Arithmetic Operations:
   • Addition: Calculates the sum of two numbers.
   • Subtraction: Computes the difference between two numbers.
   • Multiplication: Multiplies two numbers.
   • Division: Handles division, with error handling for division by zero.
3. Input Validation: Ensures correct operation handling and displays error messages for invalid inputs.
4. Graceful Exit: Users can exit the program smoothly with a friendly goodbye message.