如何将他改编成可视化界面

将控制台程序改编成可视化界面需要使用特定的 GUI 框架，如 Qt、MFC、WinForms 等。以下是一个使用 Qt 框架的示例代码：

#include <QtWidgets/QApplication>
#include <QtWidgets/QMainWindow>
#include <QtWidgets/QWidget>
#include <QtWidgets/QGridLayout>
#include <QtWidgets/QLabel>
#include <QtWidgets/QLineEdit>
#include <QtWidgets/QSpinBox>
#include <QtWidgets/QPushButton>
#include <vector>
#include <string>

using namespace std;

class Book {
private:
    string title;
    string author;
    int year;
    int pages;
public:
    void set_title(string t) { title = t; }
    void set_author(string a) { author = a; }
    void set_year(int y) { year = y; }
    void set_pages(int p) { pages = p; }
    string get_title() { return title; }
    string get_author() { return author; }
    int get_year() { return year; }
    int get_pages() { return pages; }
};

class MainWindow : public QMainWindow {
    Q_OBJECT
public:
    MainWindow(QWidget* parent = nullptr) : QMainWindow(parent) {
        setWindowTitle("图书管理系统");
        QWidget* centralWidget = new QWidget(this);
        QGridLayout* layout = new QGridLayout(centralWidget);

        QLabel* label1 = new QLabel("书名：", this);
        QLineEdit* lineEdit1 = new QLineEdit(this);
        QLabel* label2 = new QLabel("作者：", this);
        QLineEdit* lineEdit2 = new QLineEdit(this);
        QLabel* label3 = new QLabel("出版年份：", this);
        QSpinBox* spinBox1 = new QSpinBox(this);
        QLabel* label4 = new QLabel("页数：", this);
        QSpinBox* spinBox2 = new QSpinBox(this);
        QPushButton* button1 = new QPushButton("添加", this);
        QPushButton* button2 = new QPushButton("显示列表", this);

        layout->addWidget(label1, 0, 0);
        layout->addWidget(lineEdit1, 0, 1);
        layout->addWidget(label2, 1, 0);
        layout->addWidget(lineEdit2, 1, 1);
        layout->addWidget(label3, 2, 0);
        layout->addWidget(spinBox1, 2, 1);
        layout->addWidget(label4, 3, 0);
        layout->addWidget(spinBox2, 3, 1);
        layout->addWidget(button1, 4, 0);
        layout->addWidget(button2, 4, 1);

        connect(button1, &QPushButton::clicked, this, [=]() {
            Book book;
            book.set_title(lineEdit1->text().toStdString());
            book.set_author(lineEdit2->text().toStdString());
            book.set_year(spinBox1->value());
            book.set_pages(spinBox2->value());
            books.push_back(book);
            lineEdit1->clear();
            lineEdit2->clear();
            spinBox1->clear();
            spinBox2->clear();
        });

        connect(button2, &QPushButton::clicked, this, [=]() {
            QString str;
            for (int i = 0; i < books.size(); i++) {
                str += "书名：" + QString::fromStdString(books[i].get_title()) + "\n";
                str += "作者：" + QString::fromStdString(books[i].get_author()) + "\n";
                str += "出版年份：" + QString::number(books[i].get_year()) + "\n";
                str += "页数：" + QString::number(books[i].get_pages()) + "\n";
                str += "---------------------\n";
            }
            QLabel* label = new QLabel(str, this);
            label->show();
        });

        setCentralWidget(centralWidget);
    }
private:
    vector<Book> books;
};

int main(int argc, char* argv[]) {
    QApplication app(argc, argv);
    MainWindow window;
    window.show();
    return app.exec();
}

#include "main.moc"

该程序使用 Qt 框架实现了一个简单的图书管理系统，包括一个窗口、多个标签、文本框、按钮等控件，并显示了一个管理的图书列表。用户可以在窗口中输入每本书的标题、作者、出版年份和页数，并使用“添加”按钮将其添加到列表中。用户还可以使用“显示列表”按钮查看当前管理的所有图书的详细信息。