凡“&"号通过引用传递参数时可以放置? [英] Where ampersand "&" can be put when passing argument by reference?
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问题描述
在我看到的示例中,参数以下列方式通过引用传递:
In the examples that I saw the arguments were passed by reference in the following way:
void AddOne(int &y)
在我拥有的代码中,我看到以下语法:
In the code that I have I see the following syntax:
void AddOne(int& y)
我想知道这是第二种情况还是相同?
I wonder if it is the same or the second case is somehow different from the first one.
推荐答案
两者完全相同.完全没有区别.
Both are exactly the same. No difference at all.
所有重要的是,&
应该在 type 和 variable 名称之间.空间无关紧要.
All that matters is that &
should be between the type and the variable name. Spaces don't matter.
所以
void AddOne(int& y);
void AddOne(int &y);
void AddOne(int & y)
void AddOne(int & y);
void AddOne(int&y);
都一样!
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