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choosing certain cells to display in 2D arrays

jpanther (80)
Hello everyone,

This is what the program is supposed to do. If the user chooses option 1 or 2 (main menu)the program is supposed to display only the occupied offices. If they choose option 3, than it should only display the empty offices.

When I choose 3, the program displays nothing, which it is should display everything because the entire array is originally set to empty. Any help would be greatly appreciated. Thank you.
here is my code:
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  char chooseAndDisplayChoice(int amount, char option, officeBuilding buildingArray)
{
	//variables
	
	if (option == '1' || option == '2')
	{
		if (amount == 0)							//if all offices are empty, output error message 
		{											//return to main menu
			cout << "ERROR! All offices are empty" << endl;
			return 5;
		}
		else
		{
			cout << "Occupied offices:"<<endl;
			displayOccupiedOffices(buildingArray);
		}
	}
	else
	{
		cout << "Empty offices:"<<endl;	
		displayEmptyOffices(buildingArray);
	}
	
	return option;
}
//*************************************************************************************
char convertColumn(int column)
{
	//variables
	
	switch (column)
	{
		case 0:
			column = 'A';
			break;
		case 1:
			column = 'B';
			break;
		case 2:
			column = 'C';
			break;
		case 3:
			column = 'D';
			break;
		case 4:
			column = 'E';
			break;
		case 5:
			column = 'F';
			break;
		case 6:
			column = 'G';
			break;
		default:
			column = 'H';
	}
	return column;
}
//*********************************************************************************
void displayEmptyOffices(officeBuilding buildingArray)
{
	//variables
	int row, col;

	for (int row = FLOOR_ROW -1; row > 0; row--)	//for loop to display office floor and column letter
	{
		for (int col = 0; col < OFFICE_COL; col++)	
		{
			if (buildingArray[row][col] = EMPTY)						//if array is EMPTY display row and letter
				cout << setw(7) << row << convertColumn(col) << setw(7); 
			else														//if not EMPTY display nothing
				cout << setw(7) << "  " << setw(7); 					
		}     		
      	cout << endl;												 
	}
}
//***********************************************************************************
void displayOccupiedOffices(officeBuilding buildingArray)
{
	//variables
	int row, col;

	for (int row = FLOOR_ROW -1; row > 0; row--)	//for loop to display office floor and column letter
	{
		for (int col = 0; col < OFFICE_COL; col++)	
		{
			if (buildingArray[row][col] = EMPTY)						//if not EMPTY display nothing
				cout << setw(7) << "  " << setw(7);
			else														//if occupied display row and letter
				cout << setw(7) << row << convertColumn(col) << setw(7); 					
		}     		
      	cout << endl;												 
	}
}
closed account (48T7M4Gy)
line 69: == EMPTY
whitenite1 (1785)
And the same for line 87: == EMPTY
closed account (48T7M4Gy)
Going by the comment shouldn't line 87 be != EMPTY ?
whitenite1 (1785)
Yeah, you're right kemort. I stopped reading the line after seeing the single equals, mainly because the remark was so far away from the line of code. Poor excuse from me, for sure.
closed account (48T7M4Gy)
Cheers! :)
jpanther (80)
Thanks everyone for your comments. Much appreciated.
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