参考指针(如果我没记错的话)

问题描述

Hi,

void incr(int* &f)
{
    f++;
}

int main ()
{

    int *i = 0;
    std::cout<<"i ="<<i;
    incr(i);
    std::cout<<"i ="<<i;

  return 0;
}

我对带下划线的代码 int *& f 感到惊讶.您能解释一下这行的含义吗?

I am surprised looking at underlined code, int* &f. Can you explain meaning of this line.

推荐答案

void incr(int* f)
{
    f++;
}

f会增加，但main看不到变化，因为它永远不会回到那里.

f would be incremented, but main would not see the change, as it never would get back there.

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