Use make_pair to insert pair value to a map : make_pair « STL Algorithms Helper « C++ Tutorial

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C++ Tutorial » STL Algorithms Helper » make_pair

32.11.1.Use make_pair to insert pair value to a map

#include <iostream>

#include <map>

using namespace std;



int main()

{

  map<char, int> m;



  // put pairs into map

  for(int i=0; i<26; i++) {

    m.insert(make_pair((char)('A'+i), 65+i));

  }



  char ch = 'G';



  map<char, int>::iterator p;



  // find value given key

  p = m.find(ch);

  if(p != m.end())

    cout << "Its ASCII value is  " << p->second;

  else

    cout << "Key not in map.\n";



  return 0;

}

Its ASCII value is  71

32.11.make_pair
	32.11.1.	Use make_pair to insert pair value to a map

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