How to make two-dimensional array put 'new' to use in C++?

[chajs226]

Hi everyone.. I'm doing programing a maze problem.
I want to make a maze(array[5][7]) that use two-dimensional array...

but I don't know this...

{
int *a[7];
a[7] = new int [5];
}

this is result in segmentation error
help me... Thanks.

[Victor Bazarov]

ch******@gmail.com wrote:

Hi everyone.. I'm doing programing a maze problem.
I want to make a maze(array[5][7]) that use two-dimensional array...

but I don't know this...

{
int *a[7];
a[7] = new int [5];
}

this is result in segmentation error

See FAQ.

V
--
Please remove capital 'A's when replying by e-mail
I do not respond to top-posted replies, please don't ask

[fungus]

ch******@gmail.com wrote:

{
int *a[7];
a[7] = new int [5];
}

this is result in segmentation error

When you create a[7] then elements are
in the range 0 to 6. "7" is past the end
of the array.

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[Sean Fritz]

fungus wrote:

ch******@gmail.com wrote:

>{
int *a[7];
a[7] = new int [5];
}

this is result in segmentation error

When you create a[7] then elements are
in the range 0 to 6. "7" is past the end
of the array.

Definitely have to be careful with array ranges in C++, most compilers won't
give you an error if you try to go outside the index.

[Salt_Peter]

ch******@gmail.com wrote:

Hi everyone.. I'm doing programing a maze problem.
I want to make a maze(array[5][7]) that use two-dimensional array...

but I don't know this...

{
int *a[7];
a[7] = new int [5];
}

this is result in segmentation error
help me... Thanks.

there are 7 numbers from 0 to 6 and 7 isn't one of them.

[David Harmon]

On 5 Jan 2007 21:06:10 -0800 in comp.lang.c++, "ch******@gmail.com"
<ch******@gmail.comwrote,

>Hi everyone.. I'm doing programing a maze problem.
I want to make a maze(array[5][7]) that use two-dimensional array...

Avoid 'new' and bare naked arrays in application-level code.

std::vector< std::vector<int array(5, std::vector<int>(7));