Thread: assign the value of an array to a pointer c++

Hello @ all
I`m trying to do the following:

Code:

pTest->tst[0] = user_tst[0];

content of array is at this index 0x00

which doesn't work and stucks me to the following error:

error C2109: subscript requires array or pointer type.

the array comes from another file and is well defined(there) as it is also made external in the included header file.

I would be glad, if anyone could give me a hint or point me to correct direction.

Thanks for every read/help.

kox

Hey kox,
I would say post a bit more code or the whole file if it is not to big, it is a bit hard to guess only with one line. Don't forget the code tags!

thx for your reply

here is the relevant code:
file1 filling the array:

Code:

int tst_user[5];

int Fill()
{
    char variable[] = "";
    char * pch;
    int i = 0;
    
     
    printf("Enter desired Data in this style XX-XX-XX-XX-XX-XX : \n");
    scanf("%s", &variable); //user input to address of variable
    
    pch = strtok (variable, "- :");
    while (pch != NULL)
    {
        printf("%s \n",pch);  //control of splitting
        sscanf (pch, "%x", &tst_user[i]);  //filling
        pch = strtok (NULL, "- :");
        printf("array index %d = %#x \n",i, tst_user[i++]);   //control array and add 1 to index
    }

    return 0;
}
.
.
.
Fill()
.
.
.

used header:

Code:

extern int tst_user;

file 2 assigning the array to the pointer:

Code:

pTest->tst[0] = tst_user[0]);

manually(static) assigning works just fine:

Code:

pTest->tst[0] = 0x00;

but this is not what i want.

The code is very long and the failure should be in the assignment or the interchange of the array itself.

i also tried it with:

Code:

pTest->tst[0] = static_cast<int>(tst_user[0]);

which gives the same error.

Thanks for reading/helping

kox

So what does the definition of tst look like? The error is telling you that it's not an array or pointer, but you're using the square brackets as if it were a pointer.
You should show the definition of pTest too. It might be that you actually want pTest[0]->tst.

Hi @ all

@ caligulaminus

but when i do this :

Code:

extern int tst_user[5];

i get an unresolved externals error;

i think the definition and the making extern should be correct,
it compiles... till i use the instance of the array.

THX

kox

Hi @ all

@ iMalc thx for your help

The pointer is defined correctly, i tried some examples and figured out that the mistake is about the

Code:

tst_user[i]

array.
For any reason i cant re-use this in the second file.
It seems that due to the interchange between the two files, the definition gets lost.

Any ideas

Thx

kox