建造者模式C++

#include <iostream>
#include <string>
#include <vector>

class Student
{
private:
    int id;
    int age;
    int grade;
    std::string name;
    std::string college;
    std::string profession;
    std::vector<std::string> awards;

    Student(int id, int age, int grade, const std::string &name, const std::string &college,
            const std::string &profession, const std::vector<std::string> &awards)
        : id(id), age(age), grade(grade), name(name), college(college), profession(profession), awards(awards)
    {
    }

public:
    class StudentBuilder
    {
    private:
        int id;
        int age;
        int grade;
        std::string name;
        std::string college;
        std::string profession;
        std::vector<std::string> awards;

    public:
        StudentBuilder &setId(int id)
        {
            this->id = id;
            return *this;
        }

        StudentBuilder &setAge(int age)
        {
            this->age = age;
            return *this;
        }

        StudentBuilder &setGrade(int grade)
        {
            this->grade = grade;
            return *this;
        }

        StudentBuilder &setName(const std::string &name)
        {
            this->name = name;
            return *this;
        }

        StudentBuilder &setCollege(const std::string &college)
        {
            this->college = college;
            return *this;
        }

        StudentBuilder &setProfession(const std::string &profession)
        {
            this->profession = profession;
            return *this;
        }

        StudentBuilder &setAwards(const std::vector<std::string> &awards)
        {
            this->awards = awards;
            return *this;
        }

        Student build()
        {
            return Student(id, age, grade, name, college, profession, awards);
        }
    };

    static StudentBuilder builder()
    {
        return StudentBuilder();
    }
    void print()
    {
        std::cout << "id: " << id << std::endl;
        std::cout << "age: " << age << std::endl;
        std::cout << "grade: " << grade << std::endl;
        std::cout << "name: " << name << std::endl;
        std::cout << "college: " << college << std::endl;
        std::cout << "profession: " << profession << std::endl;
        std::cout << "awards: ";
        for (auto &award : awards)
        {
            std::cout << award << " ";
        }
        std::cout << std::endl;
    }
};
int main(void)
{
    Student stu = Student::builder()
                            .setId(1)
                            .setAge(18)
                            .setGrade(1)
                            .setName("zhangsan")
                            .setCollege("computer")
                            .setProfession("computer science")
                            .setAwards({"first prize", "second prize"})
                            .build();
    stu.print();
    
    return 0;
}