Con trỏ trong oop

[van_phap (Văn Pháp)]

ae cho mình hỏi

void *currensort(float a[], int n);

với

void (*currensort)(float a[], int n);

có khác nhau ko ạ. sao khi mình bỏ dấu ngoặc thì báo lỗi ạ.

#include "sortalgorithm.h"
#include<iostream>
using namespace std;
sortalgorithm*sortalgorithm::_algorithm=NULL;
sortalgorithm::sortalgorithm()
{
    currentsort=insertsort; // error
}

void *sortalgorithm::currentsort(int *, int)
Error: expression must be a modifiable lvalue

#pragma once
#include<iostream>
using namespace std;
class sotralgorithm
{
private:
    static sortalgorithm * _algorithm;
    void *currentsort(int[], int);
    sortalgorithm();
public:
    static sortalgorithm* getobject(void *temp(int[], int));
    static void selectionsort(int[], int);
    static void insertsort(int[], int);
    static void interchangesort(int[], int);
    void sort(int[], int);
};