How to name variables

Question

• What rules do you use to name your variables?
• Where are single letter vars allowed?
• How much info do you put in the name?
• How about for exam

Answer 1

I work in MathCAD and I'm happy because MathCAD gives me increadable possibilities in naming and I use them a lot. And I can`t understand how to programm without this. To differ one var from another I have to include a lot of information in the name,for example:

1.On the first place - that is it -N for quantity,F for force and so on

2.On the second - additional indices - for direction of force for example

3.On the third - indexation inside vector or matrix var,for convinience I put var name in {} or [] brackets to show its dimensions.

So,as conclusion my var name is like N.dirs / Fx i.row / {F}.w.(i,j.k) / {F}.w.(k,i.j). Sometimes I have to add name of coordinate system for vector values {F}.{GCS}.w.(i,j.k) / {F}.{LCS}.w.(i,j.k)

And as final step I add name of the external module in BOLD at the end of external function or var like Row.MTX.f([M]) because MathCAD doesn't have help string for function.