G. Rauf Khan's development of an ATM machine code and working procedure exemplifies professionalism and expertise in software development. The project embodies a holistic approach, encompassing security, usability, and reliability aspects essential for an effective ATM system. G. Rauf Khan's meticulous attention to detail and commitment to quality are evident throughout the project, making it a commendable achievement in the realm of financial technology. Efficient transaction handling is pivotal for the smooth functioning of an ATM machine, and G. Rauf Khan's code implementation excels in this regard. The transaction processing logic is robust and reliable, capable of handling various types of transactions efficiently. Error handling mechanisms are in place to address exceptional scenarios, ensuring transaction integrity and customer satisfaction.