C ++：和号“&”之间的差异和星号“*”在函数/方法声明？
问题描述：
这些之间有一些细微的区别：
Is there some kind of subtle difference between those:
void a1(float &b) {
b=1;
};
a1(b);
和
void a1(float *b) {
(*b)=1;
};
a1(&b);
？
（或者似乎从main（）），但第一个显然更短，但我看到的大多数代码使用第二个符号。有区别吗？
They both do the same (or so it seems from main() ), but the first one is obviously shorter, however most of the code I see uses second notation. Is there a difference? Maybe in case it's some object instead of float?
答
两者都一样，但是一个使用引用，一个使用指针。
Both do the same, but one uses references and one uses pointers.