相关疑难解决方法(0)

这个Java代码:

public class XYZ {   
    public static void main(){  
        int toyNumber = 5;   
        XYZ temp = new XYZ();  
        temp.play(toyNumber);  
        System.out.println("Toy number in main " + toyNumber);  
    }

    void play(int toyNumber){  
        System.out.println("Toy number in play " + toyNumber);   
        toyNumber++;  
        System.out.println("Toy number in play after increement " + toyNumber);   
    }   
}  

将输出:

 
Toy number in play 5  
Toy number in play after increement 6  
Toy number in main 5  

在C++中,我可以通过toyNumber引用传递变量以避免阴影,即创建同一个变量的副本,如下所示:

void main(){  
    int toyNumber = 5;  
    play(toyNumber);  
    cout << "Toy …