Home Question Answer How is the first index of the array in Arduino defined? How is the first index of the array in Arduino defined? The first index of the array in Arduino is always a “zero” or 0. Related Questions What is Arduino IDE? What is a Compiler? What is an Algorithm? What is a flowchart? What is Firmware? What are the two types of firmware updates? What is C/C++ programming language? How do we program IoT bridge? Load More