/* File: lambda5.cpp
 * Demonstrates returning a lambda expression that captures
 * the parameters as well as a local variable.
 */
#include <iostream>

// must #include <functional> to use std::function< >
//
#include <functional>

using namespace std ;

std::function< int(int) > makeWeirdLambda(int x, int y) {
   int z = 7 ;

   return [x,y,z](int n){ 
         int w = y + z ; 
         return n+x+w; 
      } ;
}


int main () {

   std::function< int(int) > add20 = makeWeirdLambda(3,10) ;
   cout << "add20(5) = " << add20(5) << endl ;
   cout << "add20(13) = " << add20(13) << endl ;


   std::function< int(int) > add112 = makeWeirdLambda(5,100) ;
   cout << "add112(8) = " << add112(8) << endl ;
   cout << "add112(20) = " << add112(20) << endl ;

}