CSHARP

operator -- c#

//Decrement operator (--)
int i = 3;
Console.WriteLine(i);   // output: 3
Console.WriteLine(i--); // output: 3
Console.WriteLine(i);   // output: 2

double a = 1.5;
Console.WriteLine(a);   // output: 1.5
Console.WriteLine(--a); // output: 0.5
Console.WriteLine(a);   // output: 0.5
//Increment operator (++)
int i = 3;
Console.WriteLine(i);   // output: 3
Console.WriteLine(i++); // output: 3
Console.WriteLine(i);   // output: 4

double a = 1.5;
Console.WriteLine(a);   // output: 1.5
Console.WriteLine(++a); // output: 2.5
Console.WriteLine(a);   // output: 2.5

: ? operator in c#

Object obj = null
//    is this condition true ? yes : no
var output = (obj == null) ? "Yes" : "No";

// output = "yes"

operator -- c#

a ? b : c

C# operator []

public int this[int index]
{
    get => GetValue(index);
    set => SetValue(index, value);
}