练习11.14

扩展练习11.7， 保存孩子的姓名和生日实现思路：map>>添加孩子信息时，用列表初始化创建名字和生日的pair，添`加到vector即可

```

#include#include#include#include#includeusing namespace std;void add_family(map>>& families, const string& family) {    if (families.find(family) == families.end()) {        families[family] = vector>();    }}void add_child(map>>& families, const string& family, const string& childName, const string& birthday) {    families[family].push_back({childName, birthday});}int main() {    map>> families;

add_family(families, "张");

add_child(families, "张", "强", "1970-1-1");

add_child(families, "张", "刚", "1980-1-1");

add_child(families, "王", "五", "1990-1-1");

add_family(families, "王");

for (auto f : families) {

cout << f.first << "家的孩子:";

for (auto c : f.second) {

cout << "姓名：" << c.first << "\n"

<< "生日：" << c.second << "\n";

}

cout << endl;

}

return 0;

}

```