The Program in C# Program to Find LCM of any two numbers is given below:

using System;

namespace LCM
{
    class Program
    {
        static void Main(string[] args)
        {
            int num1, num2, lcm;

            Console.WriteLine("Hello Codeauri Family, enter the first number: ");
            num1 = Convert.ToInt32(Console.ReadLine());
            Console.WriteLine("Enter the second number: ");
            num2 = Convert.ToInt32(Console.ReadLine());

            lcm = (num1 * num2) / GCD(num1, num2);

            Console.WriteLine("Alright,The LCM of " + num1 + " and " + num2 + " is: " + lcm);
            Console.ReadLine();
        }

        static int GCD(int a, int b)
        {
            if (b == 0)
                return a;
            else
                return GCD(b, a % b);
        }
    }
}

Output:

Hello Codeauri Family, enter the first number:
2

Enter the second number:
3
Alright,The LCM of 2 and 3 is: 6

Pro-Tips💡

Here are the step by step execution of above program:

using System; – This line is a using directive, which tells the compiler to use the System namespace, which includes classes and methods used in the program.

namespace LCM – The namespace declaration creates a namespace named LCM to group classes and other code elements in a logical and organized manner.

class Program – This is a class declaration, creating a class named Program.

static void Main(string[] args) – This is the main method of the program, the entry point for the program. When the program is executed, the code inside the Main method is executed first.

int num1, num2, lcm; – This line declares three integer variables: num1, num2, and lcm.

Console.WriteLine("Enter the first number: "); – This line writes a message to the console asking the user to enter the first number.

num1 = Convert.ToInt32(Console.ReadLine()); – This line reads the first number entered by the user, converts it to an integer using the Convert.ToInt32 method, and assigns it to the num1 variable.

Console.WriteLine("Enter the second number: "); – This line writes a message to the console asking the user to enter the second number.

num2 = Convert.ToInt32(Console.ReadLine()); – This line reads the second number entered by the user, converts it to an integer using the Convert.ToInt32 method, and assigns it to the num2 variable.

lcm = (num1 * num2) / GCD(num1, num2); – This line calculates the LCM by multiplying num1 and num2 and dividing the result by the GCD (Greatest Common Divisor) of num1 and num2. The result is assigned to the lcm variable.

Console.WriteLine("The LCM of " + num1 + " and " + num2 + " is: " + lcm); – This line writes the result to the console.