#include <iostream>
#include <map>
#include <string>
 
std::string foo() { return "Foo"; }
std::string bar() { return "Bar"; }
 
int main()
{
  std::map<std::string, std::string (*)()> m;
 
  // Map the functions to the names
  m["foo"] = &foo;
  m["bar"] = &bar;
 
  // Display all of the mapped functions
  std::map<std::string, std::string (*)()>::const_iterator it = m.begin();
  std::map<std::string, std::string (*)()>::const_iterator end = m.end();
 
  while ( it != end ) {
    std::cout<< it->first <<"\t\""
      << (it->second)() <<"\"\n";
    ++it;
  }
}

#include <iostream>
#include <string>
#include <map>
using namespace std;
 
namespace // for example only
{
void DoOne() { cout << "One" << endl; }
 
void DoTwo() { cout << "Two" << endl; }
 
void DoNil() { cout << "Nil" << endl; }
}
 
void Mapper()
{
    typedef void (*DoIt)();
    typedef map<string,DoIt> MapCall;
 
    MapCall	doit;
 
    doit.insert(MapCall::value_type("One",DoOne));
    doit.insert(MapCall::value_type("Two",DoTwo));
    doit.insert(MapCall::value_type("Nil",DoOne));
 
    MapCall::const_iterator call;
 
    call = doit.find("One");
    if (call != doit.end())
       (*call).second();
    else
       cout << "Unknown call requested" << endl;
}