C++ STL 컨테이너를 반복하는 방법은 무엇입니까?

#include <vector>

int main() {
  std::vector<int> v = {1, 2, 3, 4, 5};

  // 使用基于范围的 for 循环
  for (int num : v) {
    std::cout << num << " ";
  }

  std::cout << std::endl;

  // 使用迭代器
  for (std::vector<int>::iterator it = v.begin(); it != v.end(); ++it) {
    std::cout << *it << " ";
  }

  std::cout << std::endl;

  return 0;
}

#include <list>

int main() {
  std::list<int> l = {1, 2, 3, 4, 5};

  // 使用基于范围的 for 循环
  for (int num : l) {
    std::cout << num << " ";
  }

  std::cout << std::endl;

  // 使用迭代器
  std::list<int>::iterator it = l.begin();
  while (it != l.end()) {
    std::cout << *it << " ";
    it = it->next();
  }

  std::cout << std::endl;

  return 0;
}

#include <map>

int main() {
  std::map<std::string, int> m = {{"Apple", 1}, {"Banana", 2}, {"Cherry", 3}};

  // 使用基于范围的 for 循环
  for (auto const& [key, value] : m) {
    std::cout << key << ": " << value << std::endl;
  }

  std::cout << std::endl;

  // 使用迭代器
  for (std::map<std::string, int>::iterator it = m.begin(); it != m.end(); ++it) {
    std::cout << it->first << ": " << it->second << std::endl;
  }

  return 0;
}

Apple: 1
Banana: 2
Cherry: 3

Apple: 1
Banana: 2
Cherry: 3