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iOS Objective-C Basics (Retired) Functional Programming in C Control Flow - For Loops

Posted by Robert Kwiat
Robert Kwiat
5,349 Points

What does "i" mean?

Hi, I am confused about why he made the variable "i". What is it and what is it's purpose? Can you make it anything you want, such as "e" or "q" or does it have to be "i". Thanks for your input!

2 Answers

Blake Webster
Blake Webster
5,901 Points
Blake Webster
Blake Webster
5,901 Points

I've generally always used i in my programming as well and I always took it to mean i = incremental value. It can technically be whatever you want it to be, it is just a variable to use during a loop. So in your example: "e" or "q" would also work if that makes more sense for you! Andrew Chalkley is right though, most programmers use "i" in their loops.

Andrew Chalkley
STAFF
Andrew Chalkley
Treehouse Guest Teacher
Andrew Chalkley
Andrew Chalkley
Treehouse Guest Teacher

You can use anything.

Most programmers use i in loops. I think it can mean a number of things like it's type an integer or even an index of the array you're cycling over.