# C# program to find the Least Common Multiple of two numbers

Here, we are going to learn how to find the Least Common Multiple of two numbers in C#?
Submitted by Nidhi, on October 09, 2020

Here we will find the LCM of two numbers. The LCM is the smallest number, which is the multiple of both numbers.

Program:

The source code to find the LCM of two specified numbers is given below. The given program is compiled and executed successfully on Microsoft Visual Studio.

```//C# program to find the LCM of two numbers.

using System;

class Demo
{
static void Main()
{
int firstNumber=0;
int secondNumber=0;

int temp1=0;
int temp2=0;

int lcm=0;

Console.Write("Enter the value of 1st number: ");

Console.Write("Enter the value of 2nd number: ");

temp1 = firstNumber;
temp2 = secondNumber;

while (firstNumber != secondNumber)
{
if (firstNumber > secondNumber)
{
firstNumber = firstNumber - secondNumber;
}
else
{
secondNumber = secondNumber - firstNumber;
}
}
lcm = (temp1 * temp2) / firstNumber;

Console.WriteLine("Least Common Multiple is : " + lcm);
}
}
```

Output:

```Enter the value of 1st number: 9
Enter the value of 2nd number: 15
Least Common Multiple is : 45
Press any key to continue . . .
```

Explanation:

Here, we created a class Demo that contains a Main() method. Here we found the LCM of two numbers. The LCM is the smallest number, which is the multiple of both numbers.

```Console.Write("Enter the value of 1st number: ");

Console.Write("Enter the value of 2nd number: ");

temp1 = firstNumber;
temp2 = secondNumber;

while (firstNumber != secondNumber)
{
if (firstNumber > secondNumber)
{
firstNumber = firstNumber - secondNumber;
}
else
{
secondNumber = secondNumber - firstNumber;
}
}
lcm = (temp1 * temp2) / firstNumber;
```

In the above code, we read the value of numbers and find the LCM of both numbers and then print the result on the console screen.

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