c++ - 关于将函数作为参数传递的好奇心 - C++

Question

假设您有以下方法：

double * myMethod(double (*f)(double[]), double *x, int size)
{
    //do something and return
}

为什么我不能写如下？

double * myMethod(double (*f)(double *), double *x, int size)
{
    //do something and return
}

用 * 替换 [] ？

Answer 1

You can, but because arrays deprecate the pointers, they actually have the same signature, so if you're getting an error it's because you're trying to redefine the function:

http://ideone.com/E1Z7B works because I renamed the second function.