All Questions
23
questions
0
votes
1
answer
126
views
unexpexted output in c++ 2D array
problem
i/o formats
sample test case
For a given two-dimensional integer array/list of size (N x M), print the array/list in a sine wave order, i.e, print the first column top to bottom, next column ...
1
vote
2
answers
232
views
2d array average and total c++
it has to appear like this:
#include <iostream>
using namespace std;
int main()
{
float allsales[3] [2] = {{1200.33, 2350.75}, {3677.80, 2456.05}, {750.67, 1345.99}};
float ...
- 23
-1
votes
2
answers
335
views
How to overload assignment operator and create copy constructor for 2D Dynamic Arrays?
I have a flight class which has bool** property in it.
class Flight {
public:
int flightNumber;
int row;
int seat;
bool** seatReserv;
Flight();
Flight(int fly,int rw,int st);
~Flight();
Flight(...
0
votes
1
answer
42
views
How to query a dynamic 2D- array with only one pointer using new in c++
i read about 2D-Arrays and how to allocate and get the values on stackoverflow. So the proposition is to allocate only a block of memory like this:
int *ary = new int[sizeX*sizeY];
and to acces it ...
- 25
0
votes
1
answer
90
views
How to return a 2D array from a function in cpp
Im trying to create 2d array and want to return it tn the function... Any suggestions... I have gone through all the sites and found nothing..
double ** function() {
double array[] [] ;
...
1
vote
2
answers
70
views
C++ : 2D array by reference? Why does this function work
What does the parameter printArray(int (&a)[n][m]) mean? Why are the parentheses necessary and why does only 1 value need to be provided to the printArray function? how does the function know n ...
0
votes
1
answer
814
views
Detect a 2d collision in C++
I need to create a function that returns a bool that is false if there is no collision between two sprites and true if there is, I was thinking for a long time and I can not find an exact solution, ...
- 19
0
votes
2
answers
349
views
Multidimensional array assigning in loop stating: expression must be a modifiable lvalue
So in a class, I have an array like so:
public:
int playGrid[10][10];//size of the grid, 10x10 or 100 squares
And when I do:
for (int i = iX1; i < iX2; i++)
{
if (...
- 29
0
votes
1
answer
391
views
How can I create more than one 2D Magic Square array?
I've been working on some code that would generate a magic square which is basically a 2d array of size n x n with elements ranging from 1 to n^2 with each column, row, and diagonal summing up to a ...
- 33
0
votes
3
answers
2k
views
Searching a 2D grid in c++
Please take a look: http://www.geeksforgeeks.org/search-a-word-in-a-2d-grid-of-characters/
This is a C++ program that searches a 2D grid for a particular word.
In, the code, there are two ...
1
vote
1
answer
202
views
How to print a 2D array in C++?
I am not sure how to print this 2D array. I am getting consistent errors in Visual Studio 2013. Every time I try to run it, it breaks and sometimes stops responding. If you see any other errors please ...
user5775608
1
vote
0
answers
282
views
C++ 2D Tile Engine World Loading Performance
I have a 2D platforming game much like Terraria and is based off of millions of tiles that create the world. Right now I'm trying to find an effective method at loading only the tiles that are needed.
...
- 421
3
votes
2
answers
734
views
Static vector of array
I would like to have a 2D static vector that can be extended in one direction. A static vector of array sounded right to me:
struct A
{
public:
static std::vector<std::array<float, ...
- 445
0
votes
1
answer
235
views
Saving data from a 2d array into file through a function in neural network
I am newBie to neural networks. I have 2 functions. Initializing weights and saving weights. When i am initializing weights i also need to save them in a separate file.
I have the following code:
//...
1
vote
3
answers
4k
views
Fill 2d array random ints same number
I'm trying to create a 2D array filled with random ints. The number of rows and columns are decided by the user. The issue is that when I run the program, the array is filled with the same number in ...
- 35