RaPa Learning

C# has powerful structures for dealing with collections and other data structures. In this blog, we'll be using string formatting  and lists . Click on the links if you haven't done them in C# before. var names = new List<string>   { "nobita", "bheem", "oggy", "oggy cockroach", "ninja" }; foreach (var name in names) {     if(name.StartsWith("oggy")) {         Console.WriteLine($"Need to remove {name}!");         names.Remove(name);     } } This code tries to remove names starting with "oggy" from a list. Try it in the interactive editor offered by the above tutorial (click 'Enter focus mode' at the bottom of this site ) Does it work? No! Which is the line that's causing the crash? How would you resolve it? Click here to power back

See here for an interactive tutorial on control flows in C#. At the end of the tutorial, you see this piece of code, to sum all numbers between 1 and 20, which are divisible by 3 int sum = 0; for (int number = 1; number < 21; number++) {   if (number % 3 == 0)   {     sum = sum + number;   } }   Check the cyclomatic complexity  of this code. Is there a way you can simplify it by removing the nesting? Type your thoughts below. Going ahead, we'll look at using loops to iterate over a collection

See here for a short interactive tutorial about number-arithmetic in C# Of course, arithmetic in C# is similar to any other language.  Here's something to think about: Normally, if we divide & multiply by the same number, we get back the variable. For example: (c / a) * a  Would evaluate to  c  itself. However, there are some situations in which this is not true. It will not evaluate to  c What do you think? Write the situations that come to your mind below. Next, we look at control structures and a small optimization problem