gistfile1.cpp

#include <iostream>
using namespace std;

template<typename T>
struct hello
{
    void operator()(T& x)
    {
        cout << "What the F_CK:" << x << endl;
    }
};

template<typename T, typename T1>
void  func(T& x, T1& f)
{
    f(x);
}

int main(void)
{
    int param = 10;
    func(param, hello<int>());
    return 0;
}

include

using namespace std;

template
struct hello
{
void operator()(T& x)
{
cout << "What the F_CK:" << x << endl;
}
};

template<typename T, typename T1>
void func(T& x, T1& f)
{
f(x);
}

int main(void)
{
int param = 10;
hello func_inst;
func(param, func_inst);
return 0;
}