#include <iostream>
#include <string>
#include <vector>
using std::cout;
using std::endl;
using std::string;
using std::vector;
struct Person {
  string name;
  string surname;
  int age;
int main() {
  vector<Person> parr1 = {{"John", "Cooper", 32},
                          {"Theo", "Parrot", 23},
                          {"Aun", "Chao", 43},
                          {"Vivien", "Bardot", 67}};
  for (const auto &arr : parr1) {
    cout << "Name: " << arr.name << endl
         << "Surname: " << arr.surname << endl
         << "Age: " << arr.age << endl;
  return EXIT_SUCCESS;
Name: John
Surname: Cooper
Age: 32
Name: Theo
Surname: Parrot
Age: 23
Name: Aun
Surname: Chao
Age: 43
Name: Vivien
Surname: Bardot
Age: 67
在 C++ 中使用 Range 构造函数初始化一个结构体向量
另外，还可以利用 range 构造函数来初始化结构体向量。当需要创建现有向量对象的另一个副本时，这种方法很有用。如下面的代码示例所示，我们声明一个 Person 结构体的 parr3 向量，并用相同类型的 parr1 向量的内容初始化它。
#include <iostream>
#include <string>
#include <vector>
using std::cout;
using std::endl;
using std::string;
using std::vector;
struct Person {
  string name;
  string surname;
  int age;
int main() {
  vector<Person> parr1 = {
    {"John", "Cooper", 32}, {"Theo", "Parrot", 23}, {"Kim", "Colbert", 53},
    {"Aun", "Chao", 43},
    vector<Person> parr3(parr1.begin(), parr1.end());
  for (const auto &arr : parr3) {
    cout << "Name: " << arr.name << endl
         << "Surname: " << arr.surname << endl
         << "Age: " << arr.age << endl;
  return EXIT_SUCCESS;
Name: John
Surname: Cooper
Age: 32
Name: Theo
Surname: Parrot
Age: 23
Name: Kim
Surname: Colbert
Age: 53
Name: Aun
Surname: Chao
Age: 43
使用自定义构造函数在 C++ 中初始化一个结构体向量
另一种解决方案是一个向量特定的构造函数，它提供了一个用给定数量的相同值初始化向量的功能。在这种情况下，我们向构造函数提供类型为结构体 Person 的单一元素和一个任意的数字 3 来初始化对象。
#include <iostream>
#include <string>
#include <vector>
using std::cout;
using std::endl;
using std::string;
using std::vector;
struct Person {
  string name;
  string surname;
  int age;
constexpr int NUM = 3;
int main() {
  vector<Person> parr4(NUM, {"John", "Cooper", 32});
  for (const auto &arr : parr4) {
    cout << "Name: " << arr.name << endl
         << "Surname: " << arr.surname << endl
         << "Age: " << arr.age << endl;
  return EXIT_SUCCESS;
Name: John
Surname: Cooper
Age: 32
Name: John
Surname: Cooper
Age: 32
Name: John
Surname: Cooper
Age: 32
    
作者： Jinku Hu
            
DelftStack.com 创始人。Jinku 在机器人和汽车行业工作了8多年。他在自动测试、远程测试及从耐久性测试中创建报告时磨练了自己的编程技能。他拥有电气/电子工程背景，但他也扩展了自己的兴趣到嵌入式电子、嵌入式编程以及前端和后端编程。
                LinkedIn
                Facebook