private static void Main(string[] args)
{
int a = 0;
test1(ref a);
Console.WriteLine(a);
cls model = new cls();
model.a = 0;
test2(ref model);
Console.WriteLine(model.a);
cls model2 = new cls();
model2.a = 0;
test3(model2);
Console.WriteLine(model2.a);
Console.WriteLine("Hello World!");
}
private static void test3(cls model)
{
model.a = 1;
}
private static void test2(ref cls model)
{
model.a = 1;
}