数组下标C的未解析重载类型> [int]

Question

I'm getting the error message 'Unresolved overloaded type>[int] for array subscript' in my flight-booking-system program.

What I'm trying to do is set it so that if [j] is equal to 0,1,2,3... it will display accordingly as A,B,C,D. Until I started doing this my program at least compiled。

// Flight Class - Scotia 2
// 
// Contains information on seating (array), space available and return to menu option.


#include <iostream>
#include <string>
#include "passenger.h"
#include "Seat.h"

using namespace std;

/*struct Seat
        {
            int Available;
            std::string fullName;
        };// End of struct*/

class Flight
{

public:
//default constructor
Flight()
{
//initialise all seat numbers
for(int i=0;i<4;i++)
for(int j=0;j<6;j++)
    {// assigns seats as 1A, 1B etc...
    seatPlan[i][j].setRow(row);
    if(j==0)
    seatPlan[i][j].setCol('A');
    else if(j==1)
    seatPlan[i][j].setCol('B');
    else if(j==2)
    seatPlan[i][j].setCol('C');
    else if(j==3)
    seatPlan[i][j].setCol('D');
    }
}

Seat seatArray[4][6];

    void seatPlan()
    {
        for (int ROW=0;ROW<4;ROW++)
        {
            for (int COL=0;COL<6;COL++)
                {
                    cout << seatPlan[i][j].getSeatRow();
                }
        }
        // End of for loop
    }// End of seatPlan function

//method which returns true if seat is Available and false otherwise
bool getAvailable(int i, int j)
{
    if(seatArray[i][j].Available == 0)
    return true; //seat available
    else
    return false; //seat occupuied
}

string getName(int i,int j){return seatArray[i][j].fullName;}

void setAvailable(int i, int j, int a){seatArray[i][j].Available = a;}
void setName(int i,int j, string name){seatArray[i][j].fullName = name;}

private:
//variables
int row;
char col;

};// End of Flight class

The above is my flight.h file which contains the Flight class. The error message points to my constructor, with the message repeating for all the lines within that contain seatPlan[i][j].setCol('A'); and so on.

I'll include the 'seat.h' file also, just in case it's relevant.

#ifndef SEAT
#define SEAT

#include <iostream>

using namespace std;

class Seat
{

    public:
    //deafult constructor
    Seat(){available = true;}

    //accessor methods
    void setRow(int row){seatRow = row;}
    void setCol(char col){seatCol = col;}

    int getSeatRow(){return seatRow;}
    char getSeatCol(){return seatCol;}

    bool isAvailable(){return available;}
    bool switchAvailable(){
    if(available)
    available = false;
    else
    available = true;
    }

    private:
    bool available;
    int seatRow;
    char seatCol;
};

#endif

Answer 1

void seatPlan() is a method and you're treating it as an array. Did you mean seatArray instead?

Also

if(seatArray[i][j].Available == 0)
return true; //seat available
else
return false; //seat occupuied

? Really? Why not just

return seatArray[i][j].Available == 0;

(assuming you fix the previous error)

Answer 2

seatPlan[i][j].setRow(row);

Here is the problem. seatPlan is not an array. It is the name of the function.

You meant seatArray . So it should be:

seatArray[i][j].setRow(row);

One suggestion: consider using std::array as:

std::array<std::array<Seat,6>,4> seatArray;

instead of

Seat seatArray[4][6];