How can I pass a member function where a free function is expected?

Question

The question is the following: consider this piece of code:

#include 


class aClass
{
public:
    void aTest(int a, int b)
    {
        prin         


        

Answer 1

I made the member function as static and all works:

#include 

class aClass
{
public:
    static void aTest(int a, int b)
    {
        printf("%d + %d = %d\n", a, b, a + b);
    }
};

void function1(int a,int b,void function(int, int))
{
    function(a, b);
}

void test(int a,int b)
{
    printf("%d - %d = %d\n", a , b , a - b);
}

int main (int argc, const char* argv[])
{
    aClass a;

    function1(10,12,test);
    function1(10,12,a.aTest); // <-- How should I point to a's aClass::test function?

    getchar();return 0;
}