variable scope in statement blocks

Question

for (int i = 0; i < 10; i++)
{
    Foo();
}
int i = 10; // error, \'i\' already exists

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for (int i = 0; i < 10; i         


        

Answer 1

class Test
{
    int i;
    static int si=9; 

    public Test()
    {
        i = 199;
    }

    static void main()
    {
        for (int i = 0; i < 10; i++)
        {
            var x = 2;
        }

        { var x = 3; }

        {    // remove outer "{ }" will generate compile error
            int si = 3; int i = 0;

             Console.WriteLine(si);
             Console.WriteLine(Test.si);
             Console.WriteLine(i);
             Console.WriteLine((new Test()).i);
        }
    }
}