Display the first element in map : map iterator « map multimap « C++ Tutorial

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C++ Tutorial » map multimap » map iterator

23.7.3.Display the first element in map

#include <iostream>

#include <string>

#include <map>



using namespace std;



int main() {

  map<string, int> m;



  m.insert(pair<string, int>("A", 100));

  m.insert(pair<string, int>("G", 300));

  m.insert(pair<string, int>("B", 200));



  // Declare an iterator to a map<string, int>.

  map<string, int>::iterator itr;



  // Display the first element in m.

  itr = m.begin();

  cout << "Here is the first key/value pair in m: "

       << itr->first << ", " << itr->second << endl;



  return 0;

}

23.7.map iterator
	23.7.1.	Use iterator to loop through map and print all elements
	23.7.2.	Loop through map and print all the key/value pair
	23.7.3.	Display the first element in map
	23.7.4.	Display the last element in map
	23.7.5.	reverse_iterator from map
	23.7.6.	Cycle through the map in the reverse direction
	23.7.7.	Declare a reverse iterator to a map
	23.7.8.	Declare an iterator to a map
	23.7.9.	const_iterator for map
	23.7.10.	Create int string map and print all element pair

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