Use operator of less than (<) : pair « map multimap « C++ Tutorial

1. C++ Tutorial
2. map multimap
3. pair

#include <utility>
#include <string>
#include <iostream>
using namespace std;

int main(int argc, char** argv){
  pair<string, int> myPair("hello", 5), myOtherPair;

  myOtherPair.first = "hello";
  myOtherPair.second = 6;

  pair<string, int> myThirdPair(myOtherPair);

  if (myPair < myOtherPair) {
    cout << "myPair is less than myOtherPair\n";
  } else {
    cout << "myPair is greater than or equal to myOtherPair\n";
  }

  return (0);
}