Step by Step solution about How to resolve the algorithm Keyboard input/Keypress check step by step in the C# programming language

This C# code snippet is used to read a single character from the console. Here's how this code works:

1. The code starts with string chr = string.Empty;. This line declares a string variable named chr and initializes it to an empty string. It will be used to store the character entered by the user.

2. The next line, if (Console.KeyAvailable), checks whether a key is currently available to be read from the console window. Console.KeyAvailable is a property that returns true if a key has been pressed and is waiting to be read.

3. Inside the if statement, the code calls Console.ReadKey().Key.ToString(). This method reads the next key that has been pressed and returns a ConsoleKey object. The ConsoleKey object contains information about the key that was pressed, including its character value. The ToString() method of the ConsoleKey object is then used to convert the key to a string representation, which is stored in the chr variable.

4. If a key was available and read successfully, the value of chr will contain the character entered by the user. Otherwise, chr will remain an empty string.

By using this code, you can capture a single character that the user enters into the console window. This is useful in many scenarios, such as getting user input for a command-line application or implementing keyboard shortcuts in a console-based program.

string chr = string.Empty;
if(Console.KeyAvailable)
  chr = Console.ReadKey().Key.ToString();