How do I declare a 2d array in C++ using new?

Question

How do I declare a 2d array in C++ using new?

How would I announce a 2d array utilizing new?

Like, for an "ordinary" array I would:

int ary = new int[Size]

but



int

ary = new int[sizeY][sizeX]

a) doesn't work/compile and b) doesn't succeed what:

int ary[sizeY][sizeX]

multidimensional-array array cpp

4 years ago by vishaljlf39

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**akshay1995** · Answer 1 · 2021-05-29T08:43:20

akshay1995



int ary = new int[sizeX*sizeY];



// ary[i][j] is then rewritten as

ary[isizeY+j]

4 years ago

**RoliMishra** · Answer 2 · 2021-05-31T12:15:35

You can use the following:

int ary = new int[sizeX * sizeY];

Then you can access elements as:

ary[ysizeX + x]

Don't forget to use delete[] on ary.

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How do I declare a 2d array in C++ using new?

2 Answers

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