int age = 20;
Console.WriteLine(age);

string name="ali";
Console.WriteLine(name);

int y = 5;
Console.WriteLine(x + y); // خروجی: 15 (جمع عددی)
string a = "10";
string b = "5";
Console.WriteLine(a + b); // خروجی: 105 

int age = int.Parse(Console.ReadLine());
int birthYear = 2025 - age;
Console.WriteLine($"Your year of birth: {birthYear}");

for(int i = 0; i < 3; i++) {
Console.WriteLine(i);
}

int count = 0;
while (count < 3) {
Console.WriteLine(count);
count ++;
}

string[] fruits = {"apple","banana","grapes"};
foreach (string fruit in fruits) { 
Console.WriteLine(fruit);
}

int age = 20;
if (age >= 18)
{
    Console.WriteLine("شما مجاز به ورود هستید!");
}

if (age >= 18)
    Console.WriteLine("ورود مجاز ");
else
    Console.WriteLine("ورود غیرمجاز ");

int day = 3;
switch (day)
{
    case 1: Console.WriteLine("شنبه"); break;
    case 2: Console.WriteLine("یک‌شنبه"); break;
    case 3: Console.WriteLine("دوشنبه"); break;
    default: Console.WriteLine("روز نامعتبر!"); break;

if (age >= 18)
    message = "true";
else
    message = "false";

message = age >= 18 ? "true" : "false";

static int Add(int a, int b)
{
return a + b;
}

Console.WriteLine(Add(5,8));

int[] numbers = { 10, 20, 30, 40, 50 };
Console.WriteLine(numbers[0]);