QStrings的2D矩阵 [英] 2D matrix of QStrings

问题描述

我想提出一个可以预订机票的应用程序.实际上，我正在为航空公司设计系统.当我想创建一个数据库(一个保存飞机座位数的2D矩阵)时，它给了我错误.

I want to make an application with which you can reserve ticket for your travel. In fact, I'm designing the system for an airline. When I want to create a database (a 2D matrix that saves the number of seats in flights), it gives me errors.

在不同位置设置的航班数量，该数量正在更改，这是我的代码:

The number of flights set in different place and the number is changing this is my code:

QString** matrix = new QString*[numberofFlights];
for (int i = 0; i < numberofFlight; i++)
{
  matrix[i] = new QString[numberofSeats];
}

我应该在Qt中使用哪个班级?

What class in Qt should i use?

推荐答案

必读: Qt容器类.

您可以使用QVector s或QList s或其他容器类.例如，要构建向量的向量:

You could use QVectors or QLists or another container class. For example, to build a vector of vectors:

QVector< QVector<QString> > matrix(numberOfFlights);
for (int i=0; i<numberOfFlights; i++)
   matrix[i].fill("", numberOfSeats);

这将创建numberOfFlights个向量，每个向量包含numberOfSeats个空字符串.

This will create numberOfFlights vectors, that each contain numberOfSeats empty strings.

要设置特定的座位，请执行以下操作:

To set a specific seat:

matrix[flight][seat] = "whatever";

您可以使用普通的Qt foreach或迭代器或普通的for遍历向量.

You can iterate over the vectors with the usual Qt foreach, or iterators, or plain for.

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