C# Console Programs: Digit Sum, Dice Rolls, Averages and Matrix Sums

The following collection of C# console methods demonstrates digit sums, dice rolls, coin tosses, averages, array squares and matrix calculations. Each method is written in a simple, readable style suitable for beginners.

1. Digit Sum of a Number

public static void vsotastevk()
{
    int n, vsota = 0, r;
    Console.WriteLine("Vnesi stevilo: ");
    n = int.Parse(Console.ReadLine());
    while (n != 0)
    {
        r = n % 10;
        n = n / 10;
        vsota = vsota + r;
    }
    Console.WriteLine("Vsota stevk stevila je: " + vsota);
    Console.ReadLine();
}

2. Dice Throw Simulation

public static void metanjekock()
{
    Random randNum = new Random();
    int Stevilometa = 1;
    int kocka1;
    int kocka2;
    int stetje1 = 0;
    int stetje2 = 0;
    int stetje3 = 0;

    for (Stevilometa = 1; Stevilometa < 1001; Stevilometa++)
    {
        kocka1 = randNum.Next(1, 7);
        kocka2 = randNum.Next(1, 7);
        if (kocka1 > kocka2) { stetje1++; }
        if (kocka1 < kocka2) { stetje2++; }
        if (kocka1 == kocka2) { stetje3++; }
    }
    Console.WriteLine("Rezultat kocka1>kocka2: " + stetje1 + " x");
    Console.WriteLine("Rezultat kocka2>kocka1: " + stetje2 + " x");
    Console.WriteLine("Rezultat kocka1=kocka2: " + stetje3 + " x");
    Console.ReadLine();
}

3. Average of Random Even Numbers

public static void povprecjestevil()
{
    int[] tabela = new int[1000];
    int j = 0;
    int vsota = 0;
    Random randNum = new Random();
    for (int i = 0; i < 1000; i++)
    {
        j = randNum.Next(0, 101);
        if (j % 2 != 0) { j++; }
        tabela[i] = j;
        vsota = vsota + j;
    }
    int povprecje = vsota / 1000;
    Console.WriteLine(povprecje);
    Console.ReadLine();
}

4. Sum of Squares in an Array

public static int kvadratitabele(int[] tabela)
{
    int vsota = 0;
    int j = tabela.Length;
    int num = 0;
    int kvadrat = 0;
    for (int i = 0; i < j; i++)
    {
        num = tabela[i];
        kvadrat = num * num;
        vsota = kvadrat + vsota;
    }
    return vsota;
}

5. Central and Diagonal Elements of a Matrix

public static void centralnielement()
{
    Random rnd = new Random();
    int[,] tabela = new int[9, 9];
    int a = 0;
    int b = 0;
    int vsota = 0;
    int vsotad = 0;
    for (int i = 0; i < 9; i++)
    {
        vsota = 0;
        for (int j = 0; j < 9; j++)
        {
            int suka = rnd.Next(1, 10);
            tabela[i, j] = suka;
            vsota = vsota + suka;
        }
        Console.WriteLine(vsota);
    }
    for (int x = 0; x < 9; x++)
    {
        for (int y = 0; y < 9; y++)
        {
            if (x == y)
            {
                vsotad = vsotad + tabela[x, y];
            }
        }
    }
    Console.WriteLine("Vsota vsake vrstice je : ");
    int d = tabela.GetLength(1) - 1;
    for (int c = 0; c < 9; c++)
    {
        if (c != d)
        {
            vsotad = vsotad + tabela[c, d - c];
        }
    }
    Console.WriteLine("Vsota stevil v diag. je: ");
    Console.WriteLine(vsotad);
    Console.ReadLine();
}

6. Digit Sum (Alternative Version)

public static void vsota_stevk()
{
    Console.WriteLine("Vnesi stevilo: ");
    int n, vsota = 0, r;
    n = int.Parse(Console.ReadLine());
    while (n != 0)
    {
        r = n % 10;
        n = n / 10;
        vsota = vsota + r;
    }
    Console.WriteLine("Vsota stevk stevila je: " + vsota);
}

7. Tossing Two Coins

public static void metanje_dveh_kovancev()
{
    Random rand = new Random();
    int kovanec1 = 0;
    int kovanec2 = 0;
    int stetje1 = 0;
    for (int i = 0; i < 1001; i++)
    {
        kovanec1 = rand.Next(0, 2);
        kovanec2 = rand.Next(0, 2);
        Console.WriteLine(kovanec2);
        Console.WriteLine(kovanec1); // cifra 0
        if (kovanec1 == 0 || kovanec2 == 0)
        {
            if (kovanec1 == kovanec2)
            {
                stetje1++;
            }
        }
    }
    Console.WriteLine("Pri :" + stetje1++);
    Console.ReadLine();
}

8. Average of Random Numbers

public static void povprecje_stevil()
{
    Random rand = new Random();
    int[] tabela = new int[1000];
    int j = 0;
    int vsota = 0;
    for (int i = 0; i < 1000; i++)
    {
        j = rand.Next(1, 101);
        tabela[i] = j;
        vsota = vsota + j;
    }
    int rezultat = vsota / 1000;
    Console.WriteLine("Povprecje je: " + rezultat);
}

9. Squares of an Array

public static void kvadrati_tabele(int[] tabela)
{
    int j = tabela.Length;
    int num = 0;
    int kvadrat = 0;
    for (int i = 0; i < j; i++)
    {
        num = tabela[i];
        kvadrat = num * num;
        tabela[i] = kvadrat;
    }
    Console.WriteLine(tabela[kvadrat]);
    for (int a = 0; a < j; a++)
    {
        Console.WriteLine(tabela[a]);
    }
}

10. Central Element Matrix (Second Version)

public static void centralni_element_dos()
{
    Random rand = new Random();
    int[,] tabela = new int[9, 9];
    int vsota = 0;
    int x = (tabela.GetLength(0) - 1) / 2;
    int y = (tabela.GetLength(1) - 1) / 2;
    for (int i = 0; i < 9; i++)
    {
        for (int t = 0; t < 9; t++)
        {
            if (!(i == x && t == y))
            {
                int suka = rand.Next(1, 10);
                tabela[i, t] = suka;
                vsota = vsota + suka;
            }
        }
    }
    tabela[x, y] = vsota;
    for (int i = 0; i < 9; i++)
    {
        for (int t = 0; t < 9; t++)
        {
            Console.Write(tabela[i, t] + " ");
        }
        Console.Write("\n");
    }
    Console.ReadLine();
}