Function pointer to class member function

Question

I want to make function which has function pointer as a parameter.

#include 
using namespace std;

class test{

public:
    test(){};

    do         


        

Answer 1

What you probably want is this:

#include 
#include 
using namespace std;

class test{

public:
    test(){};

    double tt(double input){
        return input;
    };

};

double fptr_test( std::function func, double input){
    return func(input);
}


int main(){
    using namespace std::placeholders;

    test t;
    cout << t.tt(3) << endl;
    cout << fptr_test( std::bind( &test::tt, t, _1 ), 3) << endl;

    return 0;
}

Btw - when your program finishes correctly you suppose to return 0 from main()