Csharp+Asp.net系列教程（四）(1)[6]

                 console.writeline ("o is neither class1 nor class2.");
                 }
                 }
                 public static void main()
                 {
                 class1 c1 = new class1();
                 class2 c2 = new class2();
                 test (c1);
                 test (c2);
                 test ("a string");
                 }
                }
                输出
                o is class1
                o is class2
                o is neither class1 nor class2.
        7.三元操作符
            三元操作符(?:)也称条件操作符。对条件表达式"b?x:y",总是先计算条件b，然后进行判断。如果b的值为true,则计算x的值，否则计算y的值。条件运算符为右联运算符，因此该形式的表达式 a ? b : c ? d : e 按如下规则计算：a ? b : (c ? d : e)
        8. . 运算符
            点运算符用于成员访问。name1 . name2