C ++：为“ char [4]”数组错误获取太多的初始化程序

当我尝试编译正在处理的某些源代码时，出现此错误。我对编程非常陌生，由于某种原因，数组让我很难受：

airline2.cpp:9:84: error: too many initializers for ‘char [4]’
   char array_seats[][4] = {{'1', '2', '3', '4', '5', '6', '7'},{'A', 'B', 'C', 'D'}};

这是我的源代码：

#include <iostream>
using namespace std;

int main()
{
  char row, letter, answer;
  int letter2;

  char array_seats[][4] = {{'1', '2', '3', '4', '5', '6', '7'},{'A', 'B', 'C', 'D'}};

  for (int row = 0; row <= 6; row++)
    {
      for (int letter = 0; letter <= 4; letter++)
    {
      cout << array_seats[row][letter] << " ";
    }
      cout << endl;
    }

  do
    {
      cout << "Enter your desired seat row:\n";
      cin >> row;
      cout << "Enter a seat letter:\n";
      cin >> letter;

      if(letter == 'A' || letter == 'a')
    letter2 = 1;
      else if(letter == 'B' || letter == 'b')
    letter2 = 2;
      else if(letter == 'C' || letter == 'c')
    letter2 = 3;
      else if(letter == 'D' || letter == 'd')
    letter2 = 4;

      if(array_seats[row-1][letter2] == 'X')
    cout << "Sorry, this seat is taken.\n" << endl;

      else
    {
      array_seats[row-1][letter2] = 'X';
      cout << "Seat reservation successful.\n" << endl;
    }

      for (int row = 0; row <= 6; row++)
    {
      for (int letter = 0; letter <= 4; letter++)
        {
          cout << array_seats[row][letter] << " ";
        }
      cout << endl;
    }

      cout << "Would you like to try again? (Y/N)\n";
      cin >> answer;

    }while (answer == 'Y' || answer == 'y');

  cout << "Have a good flight!\n";

  return 0;

}

我尝试将错误设置为5并在末尾添加“ \ 0”，但似乎无济于事。有什么帮助吗？