You start counting with 1. If you’re counting floors, where you enter the building you step on floor #1 and walking upstairs you land on floor# 2. Just like how there isn’t a year 0 because we count the amount of time passed. You count the number of floors traveled.
Arrays start at 0
Array offsets start at zero. Indices start at one. Normal humans that aren’t stuck in CS101 count with indices.
You start counting with 1. If you’re counting floors, where you enter the building you step on floor #1 and walking upstairs you land on floor# 2. Just like how there isn’t a year 0 because we count the amount of time passed. You count the number of floors traveled.