2 Dimensional Arrays in C++

I started learning arrays in C++ and came over a little side note in the book talking about 2D arrays in breif.

Does it make a difference if I declare variables inside or outside a loop in Java?

Does it make a difference if I declare variables inside or outside a loop in Java?

Is there a way to add unique items to an array without doing a ton of comparisons?

Please bare with me, I want this to be as language agnostic as possible becuase of the languages I am working with (One of which is a language called PowerOn). However, most languanges support for loops and arrays.

Decrementing/Incrementing loop variable inside for loop. Is this code smell?

I have to read lines from a text file in sequential order. The file is a custom text format that contains sections. If some sections are out of order, I would like to look for the starting of the next valid section and continue processing.

Loop fusion example using aspect-oriented framework

I had recently read a paper ‘Aspect-Oriented Programming’ by Gregor Kiczales and others, and found there the loop fusion example.

Loop invariant vs Assertions

I have an exam on Programming Concepts this Saturday and I am struggling to find some information to understand some concepts better.

Loop Invariants in Python

I have a bit of experience with loop invariants but I’m not really clear on them. I’m trying to learn them through an example in Python. Can someone point one out or help me understand?

Declaring functions in order to avoid explicit nested loops

My programming professor has told me that it is a good programming practice (at least in C/C++) to declare a function with the inner loop when nesting loops (not for loops, since when, i.e. looping through a multidimensional array this is very intuitive). For example, if I write

Is there an idiom for a loop that executes some block of instructions between iterations? (In Ruby in particular)

I often need to do some operations in a loop and some other operations between the iterations. A simple example would be collecting words from an array into a string, spelled backwards and separated with commas. Is there an idiom or language support for this in any language? (For now i am mostly interested in Ruby.)

LOOP program only need inc and zero

I have 4 different commands in LOOP programming language: