using System;

​

const int Fizz = 3;

const int Buzz = 5;

​

for (var i=1; i <=100; i++){

    if ((i%Fizz) == 0){

        if ((i%Buzz) == 0){Console.WriteLine("FizzBuzz");}

        else Console.WriteLine("Fizz");

    }

    else if ((i%Buzz) == 0) Console.WriteLine("Buzz");

    else Console.WriteLine(i);

}

​