[] automatically inserts elements. : Map « Data Structure « C++

1. C++
2. Data Structure
3. Map

[] automatically inserts elements.

#include <iostream>
#include <map>
using namespace std;

int main()
{
  map<char, int> mapObject;

  cout << "Initial size of map: " << mapObject.size() << endl;

  cout << "The value associated with A is " << mapObject['A'];
  cout << endl;

  cout << "Size of map is now: " << mapObject.size() << endl;

  return 0;
}


           
       

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