My longest-lived piece of code is the Excel VBA code I write for my Dad’s company over 20 years ago. I built a custom export documentation generator for his exp

My longest-lived piece of code is the Excel VBA code I write for my Dad’s company over 20 years ago. I built a custom export documentation generator for his export business, with centralised price list with individual prices for customers, stock control and production tracking. It is still in use, more than 20 years on. Scary and awesome at the same time! Submitted a simplified version of it as part of my IT coursework in college and got top marks in the class. ;)