make pair map
// make_pair example
#include <utility> // std::pair
#include <iostream> // std::cout
int main () {
std::pair <int,int> foo;
std::pair <int,int> bar;
foo = std::make_pair (10,20);
bar = std::make_pair (10.5,'A'); // ok: implicit conversion from pair<double,char>
std::cout << "foo: " << foo.first << ", " << foo.second << '\n';
std::cout << "bar: " << bar.first << ", " << bar.second << '\n';
return 0;
}