C# Programming - Classes and Objects

namespace IndiabixConsoleApplication
{ 
    class Sample
    { 
        int i; 
        Single j; 
        public void SetData(int i, Single j)
        { 
            i = i;
            j = j;
        }
        public void Display()
        { 
            Console.WriteLine(i + " " + j);
        } 
    } 
    class MyProgram
    { 
        static void Main(string[ ] args)
        { 
            Sample s1 = new Sample();
            s1.SetData(10, 5.4f); 
            s1.Display(); 
        } 
    } 
}

1. Data members ofa class are by default public.
2. Data members of a class are by default private.
3. Member functions of a class are by default public.
4. A private function of a class can access a public function within the same class.
5. Member function of a class are by default private.

namespace IndiabixConsoleApplication
{ 
    class Sample
    { 
        public int index; 
        public int[] arr = new int[10]; 
        
        public void fun(int i, int val)
        { 
            arr[i] = val;
        }
    }
     
    class MyProgram
    { 
        static void Main(string[] args)
        {
            Sample s = new Sample(); 
            s.index = 20; 
            Sample.fun(1, 5); 
            s.fun(1, 5); 
        } 
    } 
}

sample c;
c = new sample();

1. It will create an object called sample.
2. It will create a nameless object of the type sample.
3. It will create an object of the type sample on the stack.
4. It will create a reference c on the stack and an object of the type sample on the heap.
5. It will create an object of the type sample either on the heap or on the stack depending on the size of the object.