c++ - 类成员数组 : invalid type for array subscript 的实现

Question

我是 C++ 的新手，我有一个项目，在这个项目中我需要使用类来组织音乐会的座位表。问题是，我在很多实现代码中都收到错误消息“错误:数组下标的无效类型'type [int]'”，即使我有理由确定我在类中的数组声明是合法的并且已实现正确。

这是包含类的头代码:

#ifndef HALL_H
#define HALL_H

#include <iostream>
#include <string>
using namespace std;

const double     PRICE_HI = 200.0;
    const int MIN_HI_SEAT = 5;
    const int MAX_HI_SEAT = 16;
    const char MAX_HI_ROW = 'H';
const double     PRICE_LO = 150.0;
const char       MAX_ROWS = 'N';
const int        NUM_ROWS = 14;
const int       NUM_SEATS = 20;
const int         MAX_RES = 12;
const double     DISCOUNT = 0.9;
const string        BLANK = "---";
const int        NUM_DAYS = 7;

class Hall {
    public:
        string  name[NUM_ROWS][NUM_SEATS];

        Hall         ();
        bool request (string, int, string, int);
        bool cancel  (string);
        void print   ();

    private:    
        char     row[NUM_ROWS];
        int     seat[NUM_SEATS];
        bool      hi[NUM_ROWS][NUM_SEATS];
        double price[NUM_ROWS][NUM_SEATS];

        bool process  (string, int, string, int);
        void revenue  ();
        string enough (int, string, bool);
        bool count    (int, bool);
        void make     (string, int, string, int, bool, string);
        void assign   (string, int, int, int, int, bool, bool, string);
        void leftover (string, int, int);
        void output   (string, int, int, int);
};

#endif

下面是实现中的构造函数，作为获取错误信息的代码示例:

#include <iostream>
#include "hall.h"
using namespace std;

    Hall::Hall()
{   
    char row = 'A';
    int seat = 1;
    for (int i = 0; i < NUM_ROWS; i++) {
    for (int j = 0; j < NUM_SEATS; j++) {
        row[i]      = row;
        seat[j]     = seat;
        name[i][j]  = BLANK;
        price[i][j] = 0;
        if (row[i]  <= MAX_HI_ROW  &&
            seat[j] >= MIN_HI_SEAT &&
            seat[j] <= MAX_HI_SEAT) {
            hi[i][j] = true;
        } else {
            hi[i][j] = false;
        }
        seat++;
    }
    seat = 1;
    row++;
    }
}

下面是构造函数的错误信息:

hall.cpp: In constructor ‘Hall::Hall()’:                                                                                         
hall.cpp:11: error: invalid types ‘char[int]’ for array subscript
hall.cpp:12: error: invalid types ‘int[int]’ for array subscript
hall.cpp:15: error: invalid types ‘char[int]’ for array subscript
hall.cpp:16: error: invalid types ‘int[int]’ for array subscript
hall.cpp:17: error: invalid types ‘int[int]’ for array subscript

我对此感到困惑有一段时间了，感谢任何帮助。

干杯

Answer 1

这些局部变量:

char row = 'A';
int seat = 1;

隐藏同名成员。选择不同的名称，或以 this->row 和 this->seat 访问成员。