ЯсноПонятно24

using System;

class Program { static void Main() { int a = 5; int b = 10; Swap(ref a, ref b); Console.WriteLine($"a = {a}, b = {b}");

    int c = 3;
    int d = 4;
    AddAndMultiply(ref c, ref d);
    Console.WriteLine($"c = {c}, d = {d}");

    int number = 12345;
    ReverseDigits(ref number);
    Console.WriteLine($"Reversed number: {number}");

    int x = 15, y = 7, z = 10;
    SortThreeNumbers(ref x, ref y, ref z);
    Console.WriteLine($"Sorted numbers: {x}, {y}, {z}");
}

static void Swap(ref int x, ref int y)
{
    int temp = x;
    x = y;
    y = temp;
}

static void AddAndMultiply(ref int x, ref int y)
{
    int sum = x + y;
    int product = x * y;
    x = sum;
    y = product;
}

static void ReverseDigits(ref int number)
{
    int reversed = 0;
    while (number > 0)
    {
        int digit = number % 10;
        reversed = reversed * 10 + digit;
        number /= 10;
    }
    number = reversed;
}

static void SortThreeNumbers(ref int x, ref int y, ref int z)
{
    if (x > y)
        Swap(ref x, ref y);
    if (x > z)
        Swap(ref x, ref z);
    if (y > z)
        Swap(ref y, ref z);
}

}