std::is_member_function_pointer template in C++ with Examples

// C++ program to illustrate
// std::is_member_function_pointer
#include <bits/stdc++.h>
#include <type_traits>
using namespace std;

// Declare a structure
class GFG {

public:
    int gfg;
};

class A {
};

// Driver Code
int main()
{

    // Object to class GFG
    int GFG::*pt = &GFG::gfg;
    cout << boolalpha;

    // Check if GFG* is a member function
    // pointer or not
    cout << "GFG*: "
         << is_member_function_pointer<GFG*>::value
         << endl;

    // Check if int GFG::* is a member
    // function pointer or not
    cout << "int GFG::* "
         << is_member_function_pointer<int GFG::*>::value
         << endl;

    // Check if int A::* is a member
    // function pointer or not
    cout << "int A::* "
         << is_member_function_pointer<int A::*>::value
         << endl;

    // Check if int A::*() is a member
    // function pointer or not
    cout << "int A::*() "
         << is_member_function_pointer<int (A::*)()>::value
         << endl;

    return 0;
}

// C++ program to illustrate
// std::is_member_function_pointer
#include <bits/stdc++.h>
#include <type_traits>
using namespace std;

// Declare a structure
struct A {
    void fn(){};
};

struct B {
    int x;
};

// Driver Code
int main()
{
    void (A::*pt)() = &A::fn;
    cout << boolalpha;

    cout << "A*: "
         << is_member_function_pointer<A*>::value
         << endl;

    cout << "void(A::*)(): "
         << is_member_function_pointer<void (A::*)()>::value
         << endl;

    cout << "B*: "
         << is_member_function_pointer<B*>::value
         << endl;

    cout << "void(B::*)(): "
         << is_member_function_pointer<void (B::*)()>::value
         << endl;

    return 0;
}