C#におけるstructとclassの違い

namespace structAndclass{class Program{static void Main(string[]args){//違い:structは伝達時に伝達がコピーであり、元のオブジェクト//classが伝達時に伝達するのは元のオブジェクトへの参照であり、元のオブジェクトの値を修正しない

        StructModifyPoint structModifyPoint = new StructModifyPoint();
        structModifyPoint.y = 10;
        structModifyPoint.x = 10;
        Console.WriteLine("----------Struct--------");
        // values are 10,10
        Console.WriteLine("Initial values are :{0},{1}",structModifyPoint.x,structModifyPoint.y);
        Console.WriteLine("Insurt structChangePoint():");
        // values are 20,20
        structChangePoint(structModifyPoint);
        // values are 10,10
        Console.WriteLine("After Modify,struct values are:{0},{1}", structModifyPoint.x, structModifyPoint.y);

        ClassModifyPoint classModifyPoint = new ClassModifyPoint();
        classModifyPoint.y = 10;
        classModifyPoint.x = 10;
        Console.WriteLine("----------Class--------");
        // values are 10,10
        Console.WriteLine("Initial values are :{0},{1}", classModifyPoint.x, classModifyPoint.y);
        Console.WriteLine("Insurt classChangePoint():");
        // values are 20,20
        classChangePoint(classModifyPoint);
        // values are 20,20
        Console.WriteLine("After Modify,class values are:{0},{1}", classModifyPoint.x, classModifyPoint.y);
        Console.ReadKey();

    }
    //struct
    public static   void structChangePoint(StructModifyPoint point)
    {
        point.x += 10;
        point.y += 10;

        Console.WriteLine("structChangePoint inner values are:{0},{1}",point.x,point.y);
    }
    //class
    public  static void classChangePoint(ClassModifyPoint point)
    {
        point.x += 10;
        point.y += 10;
        Console.WriteLine("classChangePoint inner values are:{0},{1}", point.x, point.y);
    }
}
// 

public struct StructModifyPoint { public int x; public int y; public StructModifyPoint(int x,int y) { this.x = x; this.y = y; }

}

// 

public class ClassModifyPoint { public int x; public int y; public ClassModifyPoint() {

    }

    public ClassModifyPoint(int x, int y)
    {
        this.x = x;
        this.y = y;
    }
}

}20個のC#ホットスポット問題解答>>マイクロソフト仮想学院