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#include <iostream>
//#include <utility>
#include <tuple>
#include <cstdlib>
#include <vector>
 
int
main (int argc, char *argv[])
{
  typedef std::tuple<int,int> Tuple;
 
  std::vector<Tuple> v = {
    Tuple(123,321),
    Tuple(999,111)
  };
 
  typedef int& (*getter_type)(std::tuple<int,int>&);
  getter_type getter = std::rand() & 1 ? (getter_type)&std::get<0,int,int> : (getter_type)&std::get<1,int,int>;
 
  for (auto& tup : v) {
    std::cerr << getter(tup) << " ";
  }
}
 

prog.cpp: In function 'int main(int, char**)':
prog.cpp:20:18: error: expected initializer before ':' token
prog.cpp:23:1: error: expected primary-expression before '}' token
prog.cpp:23:1: error: expected ';' before '}' token
prog.cpp:23:1: error: expected primary-expression before '}' token
prog.cpp:23:1: error: expected ')' before '}' token
prog.cpp:23:1: error: expected primary-expression before '}' token
prog.cpp:23:1: error: expected ';' before '}' token

Standard output is empty