形参与实参的参数传递，如何改变参数值

#include <iostream>
using namespace std;
void change(int *a,int &b,int c) //这里的形参是*a,&b,c呢，还是a,b,c?
{
    c = *a;
    b = 3;
    *a = 2;
}
int main()
{
    int a = 1,b = 2, c = 5;
    change(&a,b,c);//这里的实参是&a,b,c呢，还是a,b,c?
    cout<<a<<b<<c<<endl;
    return 0;
}