#include <iostream>
#include <functional>

using namespace std ;

void printString(const string& str1)
{
    cout << str1 << endl ;
}


int main()
{
    //Create a std::function object called f1. Store the function
    //printString in it.

    function< void(const string&) > f1 = printString ;
    const string str1 =  "Hooray. Almost end of Semester."  ;
    cout << "Result of f1: " ;
    f1( str1 ) ;

    //Create a std::function object called f2. Store
    //a lambda expression that does the same thing
    //as printString. The capture clause is empty and
    //it takes a single argument of type "const string&"
    //printString in it.
    function< void(const string&) > f2 = [](const string& str1 )
       {
         cout << str1 << endl ;
	   }
    ;
   cout << "Result of f2: " ;
   f2( str1 ) ;




    return 0;
}