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How to sum rows and sections in 3d array.

RayDALL (5)
Hi guys,

I am new to programming and I am new to the site as well. This is my very first post and I am finishing my very first semester in college. I am having a very hard time figuring out how to add the rows in my 3d array. I have a total printed to the screen, but I am not sure how to really calculate the total. My brain has been pounding and I am sure that it is something small that I am doing wrong or missing. Please advise.


#include <iostream>
#include <iomanip>
#include <cmath>
using namespace std;

const int NUM_SECTIONS = 3,
ROWS_IN_SECTION = 5,
SEATS_IN_ROW = 8;




typedef double seatTable[NUM_SECTIONS][ROWS_IN_SECTION][SEATS_IN_ROW];

// Function prototypes
void fillArray(seatTable);
void showArray(const seatTable, double price);


int main()
{

double price = 150.00;
double f = price,
s = f - (f * 0.10),
t = s - (s * 0.10),
l = t - (t * 0.15);
double finalPrice;


// Define 3-D array to hold seat prices
double seats[NUM_SECTIONS][ROWS_IN_SECTION][SEATS_IN_ROW] = {{{f,f,f,f,f,f,f,f},
{f,f,f,f,f,f,f,f},
{f,f,f,f,f,f,f,f},
{s,s,s,s,s,s,s,s},
{s,s,s,s,s,s,s,s}},

{{t,t,t,t,t,t,t,t},
{t,t,t,t,t,t,t,t},
{t,t,t,t,t,t,t,t},
{t,t,t,t,t,t,t,t},
{t,t,t,t,t,t,t,t}},

{{l,l,l,l,l,l,l,l},
{l,l,l,l,l,l,l,l},
{l,l,l,l,l,l,l,l},
{l,l,l,l,l,l,l,l},
{l,l,l,l,l,l,l,l}}};




showArray(seats, price);
finalPrice = (f * 24) + (s * 16) + (t * 40) + (s * 40);
cout << "\nThe total collected for the SOLD OUT show equals: $" << finalPrice << endl;

return 0;
}



void showArray(const seatTable array, double price)
{
cout << fixed << showpoint << setprecision(2);



for (int section = 0; section < NUM_SECTIONS; section++)
{
double rowTotal = 0.0;
cout << "\n\nSection" << (section+1);
for (int row = 0; row < ROWS_IN_SECTION; row++)
{

cout << "\nRow " << (row+1) << ": ";
for (int seat = 0; seat < SEATS_IN_ROW; seat++)
cout << setw(7) << array[section][row][seat];
rowTotal += array[ROWS_IN_SECTION] [SEATS_IN_ROW];
cout << " Total =" << rowTotal;
}
}
cout << endl;
}

Last edited on
whitenite1 (1785)
@RayDALL

Just a few small errors. Here is your program, with the corrections.
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#include <iostream>
#include <iomanip>
#include <cmath>
using namespace std;

const int NUM_SECTIONS = 3,
ROWS_IN_SECTION = 5,
SEATS_IN_ROW = 8;




double seatTable[NUM_SECTIONS][ROWS_IN_SECTION][SEATS_IN_ROW];

// Function prototypes
void fillArray(double seats[NUM_SECTIONS][ROWS_IN_SECTION][SEATS_IN_ROW]);
void showArray(double seats[NUM_SECTIONS][ROWS_IN_SECTION][SEATS_IN_ROW], double price);

int main()
{

	double price = 150.00;
	double f = price,
		s = f - (f * 0.10),
		t = s - (s * 0.10),
		l = t - (t * 0.15);
	double finalPrice;

	// Define 3-D array to hold seat prices
	double seats[NUM_SECTIONS][ROWS_IN_SECTION][SEATS_IN_ROW] = { { { f, f, f, f, f, f, f, f },
	{ f, f, f, f, f, f, f, f },
	{ f, f, f, f, f, f, f, f },
	{ s, s, s, s, s, s, s, s },
	{ s, s, s, s, s, s, s, s } },

	{ { t, t, t, t, t, t, t, t },
	{ t, t, t, t, t, t, t, t },
	{ t, t, t, t, t, t, t, t },
	{ t, t, t, t, t, t, t, t },
	{ t, t, t, t, t, t, t, t } },

	{ { l, l, l, l, l, l, l, l },
	{ l, l, l, l, l, l, l, l },
	{ l, l, l, l, l, l, l, l },
	{ l, l, l, l, l, l, l, l },
	{ l, l, l, l, l, l, l, l } } };

	showArray(seats, price);
	finalPrice = (f * 24) + (s * 16) + (t * 40) + (s * 40);
	cout << "\nThe total collected for the SOLD OUT show equals: $" << finalPrice << endl;

	return 0;
}

void showArray(double seats[NUM_SECTIONS][ROWS_IN_SECTION][SEATS_IN_ROW], double price)
{
	cout << fixed << showpoint << setprecision(2);

	for (int section = 0; section < NUM_SECTIONS; section++)
	{
		double rowTotal = 0.0;
		cout << "\n\nSection" << (section + 1);
		for (int row = 0; row < ROWS_IN_SECTION; row++)
		{

			cout << "\nRow " << (row + 1) << ": ";
			for (int seat = 0; seat < SEATS_IN_ROW; seat++)
			{
				cout << setw(7) << seats[section][row][seat];
				rowTotal += seats[section][row][seat];
			}
			cout << " Total =" << rowTotal;
		}
	}
	cout << endl;
}


And, please, when posting code, use the formatting button to the right, that looks like <>. Highlight your code in the post, and click the <> symbol. This way, it'll show line numbers, and make reading the code a lot easier. And we can use the line numbers to point you to the area of code that needs looking at.
Last edited on
RayDALL (5)
Perfect!! It works and compiles. Thank you very much for your help and thank you for letting me know how to properly post in the future. I greatly appreciate it. Since I am new and the semester is coming to an end... do you have any recommendations for books to read during break so that I can continue to learn and prepare for whats ahead?
cire (8284)
finalPrice = (f * 24) + (s * 16) + (t * 40) + (s * 40);

Should s appear twice in this line?
RayDALL (5)
thank you for catching that. It was supposed to be 'l'. I have fixed it now. Thank you very much. One thing that I notice is that one wrong button press can change EVERYTHING with your program. Thank you again cire for catching that for me.
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