pointer on pointer array of arrays

Question

i searched for my problem, but didn't found it.

I have a declaration of an pointer array

int *Blocks[] = {Block1,Block2,Block3,Block4};

The Blocks are arrays with a length of 50.

Now i have a for-loop, there i want to step by step init the fields

for(int i=0;i<50;++i)
{
*(Blocks[section])+i = 1;
}

The One should be a variable later. Is it right or whats the right expression to get the array field of the selected section?

Thanks to every answer

NPE · Accepted Answer · 2012-01-18 07:48:08Z

4

No, that line isn't quite right. The following is (note the position of the parentheses):

*(Blocks[section]+i) = 1;

or, equivalently but more concisely:

Blocks[section][i] = 1;

answered Jan 18, 2012 at 7:48

NPE

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Comments

cha0site · Accepted Answer · 2012-01-18 07:49:59Z

2

What you wrote almost works, you can do:

*(Blocks[section] + i) = 1;

But the best solution would be to use C's syntactic sugar and write:

Blocks[section][i] = 1;

answered Jan 18, 2012 at 7:49

cha0site

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1 Comment

fnobbi Over a year ago

thank you both! Blocks[section][i] = 1; is what i've searched for

Didier Ghys · Accepted Answer · 2012-01-18 15:03:18Z

-1

you may set init that fields as

*(Blocks[section]+i) = 1;

and maybe you should malloc enough memory before you init Blocks

edited Jan 18, 2012 at 15:03

Didier Ghys

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answered Jan 18, 2012 at 14:37

killerlpy

1

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