求C#编程题答案

求C#编程题答案

class Student
    {
        private string m_name;
        private string m_sex;
        private DateTime m_birthday;
        private string m_age;
        public string Name
        {
            get
            {
                return m_name;
            }
            set
            {
                m_name = value;
            }
        }
        public string Sex
        {
            get
            {
                return m_sex;
            }
            set
            {
                if (value == "男" || value == "女")
                {
                    m_sex = value;
                }
                else
                {
                    m_sex = "error";
                }
            }
        }
        public DateTime Birthday
        {
            set
            {
                m_birthday = value;
            }
        }
        public int Age
        {
            get
            {
                return DateTime.Now.Year - m_birthday.Year;
            }
        } 
        
    }