基础速解，有帮助会采纳

首先，确定是C#吗？
1.数组声明应该很简单啊，你这里是一个string类型的，那就是string[] subject = new string[] { "数学","英语"};
2.结构体的声明
struct Student
{
string Name;
string Sex;
int Age;
double Long;
double Height;
}
3.枚举的声明
enum Month
{
January,
February,
March,
April,
May,
June,
}
我这里只写了6个月，调用的话就是Month month = Month.February;

```c#
2）string[] subjects = new string[] {"语文"，“历史”，“地理”}；
3）struct students
{
  string name;
  string sex;
  int age;
  int height;
  int weight;
}
4) enum months
{
    Jan,
    Feb,
    Mar,
...
}

```