使用LINQ查询和更新集合中的属性

using System;
using System.Collections.Generic;
using System.Linq;

class Program
{
    static void Main()
    {
        List<Student> students = new List<Student>
        {
            new Student { Name = "John", Age = 18 },
            new Student { Name = "Jane", Age = 21 },
            new Student { Name = "Tom", Age = 17 },
            new Student { Name = "Mary", Age = 19 }
        };

        // 查询年龄大于等于18岁的学生
        var query = from student in students
                    where student.Age >= 18
                    select student;

        // 更新查询结果中的学生属性
        foreach (var student in query)
        {
            student.Age += 1;
            Console.WriteLine($"{student.Name}的年龄已更新为{student.Age}");
        }
    }
}

class Student
{
    public string Name { get; set; }
    public int Age { get; set; }
}