Go Down

### Topic: 2d array to 1d array conversion (Read 2374 times)previous topic - next topic

#### bluebubble

##### Nov 28, 2012, 05:09 pm
Hi everybody

I'm trying to pass the information of a 2d array to a 1d array like this

Code: [Select]
`char listbuffer[81];char list1[81];char list2[81];char list3[81];char list4[81];char list5[81];char* liste[5];void Setupparty(){  liste[0] = list1;  liste[1] = list2;  liste[2] = list3;  liste[3] = list4;  liste[4] = list5;}void loop(){  liste[0] = SerialtoChararray(); // madeup function  listbuffer = liste[x];}`

Everything works fine except that conversion from 2d to 1d array.

Has anybody got an idea on this?

#### PaulS

#1
##### Nov 28, 2012, 06:36 pm
Quote
I'm trying to pass the information of a 2d array to a 1d array like this

Which 2D array are you trying to pass to a 1D array?

You have a several arrays of characters and an array of pointers. All the arrays are 1D.

Code: [Select]
`  listbuffer = liste[x];`
listbuffer is an array. You can't assign a pointer to an array. There is a strcpy() function to copy NULL terminated arrays of chars from one array to another.

Make sure that your made up function ACTUALLY returns a pointer that points to valid data AFTER THE FUNCTION ENDS.
The art of getting good answers lies in asking good questions.

#### Jimmy60

#2
##### Nov 28, 2012, 09:32 pm
How about an approach like this?

Code: [Select]
`struct List{char list[81];} liste[5];`

Then you would refer to them as:

Code: [Select]
`liste[i].list // where i is the desired index`

#### holmes4

#3
##### Nov 28, 2012, 10:43 pm
A look at this Tutorial would help a great deal.

http://pw1.netcom.com/~tjensen/ptr/pointers.htm

You (of course) can have an array of pointers, an illfe vector search for then in this "Expert C Programming: Deep C Secrets" google book. And now a very long link

Mark

#### bluebubble

#4
##### Nov 28, 2012, 10:56 pmLast Edit: Nov 28, 2012, 11:01 pm by bluebubble Reason: 1
Hey everybody
i tried the strcpy() function and everything is working correctly now.

Thanks for your help

edit: thanks holmes4 for that tutorial.

Go Up