pointers to functions problem

Kinda urological for my right now why this isn`t working.

Code:

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#include <iostream>

using namespace std;

void myFunction(void *CallThis, int a);
void myCallback();
int main();

void myFunction(void *CallThis, int a) {
        cout << __FUNCDNAME__ << endl;
        cout << CallThis << endl;
        CallThis(); //compile error: error C2064: term does not evaluate to a function taking 0 arguments

}

void myCallback() {
        cout << __FUNCDNAME__ << endl;
}

int main()
{
        void (*ptr)();
        ptr = myCallback;

        ptr(); //working

        myFunction(ptr, 2);

        return EXIT_SUCCESS;
}

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I believe your function should be:

Code:

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void myFunction(void (*CallThis)(), int a);

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A void* is not a function pointer.

Well you got the type wrong in the function call.

Say
void myFunction( void (*CallThis)(), int a)

Also doesn`t work.

Thanks for the ultra informative feedback.

However, this works for me, so I've no idea how you cocked it up.

Code:

---

#include <iostream>

using namespace std;

#define __FUNCDNAME__ __func__

void myFunction(void (*CallThis)(), int a);
void myCallback();
int main();

void myFunction(void (*CallThis)(), int a) {
        cout << __FUNCDNAME__ << endl;
        cout << CallThis << endl;
        CallThis();
}

void myCallback() {
        cout << __FUNCDNAME__ << endl;
}

int main()
{
        void (*ptr)();
        ptr = myCallback;

        ptr(); //working

        myFunction(ptr, 2);

        return EXIT_SUCCESS;
}

$ g++ foo.cpp
$ ./a.exe
myCallback
myFunction
1
myCallback

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Quote:

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Originally Posted by Salem

Thanks for the ultra informative feedback.

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Sorry.

No idea what I have messed up.

Thanks, working fine now.