Step by Step solution about How to resolve the algorithm Environment variables step by step in the C# programming language

This C# program is a simple example of how to retrieve the value of an environment variable. In this case, it retrieves the value of the TEMP environment variable and prints it to the console.

Here's a detailed explanation of the code:

1. The first line of the code imports the System namespace. The System namespace contains many of the core classes and types that are used in C# programs.
2. The next line defines a class named Program. This class contains the Main method, which is the entry point of the program.
3. Inside the Main method, the first line of code retrieves the value of the TEMP environment variable using the GetEnvironmentVariable method of the Environment class. The TEMP environment variable typically stores the path to the temporary directory on the user's computer.
4. The next line of code prints the value of the TEMP environment variable to the console using the Console.WriteLine method.

When this program is run, it will print the value of the TEMP environment variable to the console. For example, on my computer, the output of the program would be:

TEMP is C:\Users\eric\AppData\Local\Temp

using System;

namespace RosettaCode {
    class Program {
        static void Main() {
            string temp = Environment.GetEnvironmentVariable("TEMP");
            Console.WriteLine("TEMP is " + temp);
        }
    }
}