An example showing usage of some std containers in C++11

containers.cpp

#include <iostream>
#include <string>
#include <vector>
#include <map>
#include <set>

int main()
{
  std::vector<int> a = {1, 2, 3, 4, 5};
  a.push_back(42);
  a.erase(a.begin() + 3);
  for (auto &el : a) {
    std::cout << el << std::endl;
  }

  // Initializing a map with an initialization list
  std::map<int, std::vector<std::string>> map({
      {1, { "Ignoring", "The", "Voices" } },
      {2, { "In", "My", "Head" } }
  });
  map[666] = {"Number", "of", "the", "beast"};
  for (auto i = map.begin(); i != map.end(); i++)
  {
      std::cout << i->first << " :";
      for (auto &el : i->second)
          std::cout << " " << el;
      std::cout << std::endl;
  }

  std::set<std::string> s = {};
  s.insert("abc");
  s.insert("def");
  if (s.find("abc") != s.end()) {
    std::cout << "s contains 'abc'" << std::endl;
  };
}