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IIRC first versions of COBOL (or some other prehistoric language) had fixed, pre-defined variables of different types, "i" was the first integer.
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TobiSGD2815yIn Mathematics the variables i,j,k,l where usually used to describe integers. Fortran took this convention and ran with it, in Fortran variables beginning with the letters I-N where of type Integer by default, which of course means that single letter I is the first "default" integer variable.
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Root824575yI learned assembly first, and then picked up C, which gave me a few strange habits and patterns. For example, I often used `a` or `c` as the for loop variable because it's called the accumulator, and in assembly it's common practice to use the cx register for looping.
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kamen69695y@k0pernikus Yeah, but I think it makes more sense to give it a meaningful name; after all, you're not typing it two times like just the declaration row of a standard for loop, so IMO it doesn't hurt for it to be longer... unless you're doing something on a single row, when just one character can be okay.
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Parzi88455yin TI-BASIC i use S for loops (then T,U,V if something's nested.) No clue WHY, but I do. They're not even easiest to get to, they're just what I use...
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In our physics class when working with dimensions we used i, j, and k as for x , y, and z. Don't know if it's a physics thing or that our lecturer preferred to do it that way.
So it might be in order to denote dimensions. -
No one will ever know.
Unless it just simply means “iterate” or “iteration” which actually makes the most sense tbh.
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