Problem with pointers

[monsun]

Sometimes i have problems with big arrays and pointers:
for example when i use it this way everything is allright:
float example(float *something_external)
{
int8 i;
float something;
for(i=0;i<10;i++)
{
something+=*something_external;
something_external++;
}
return something;
}
BUT when i use it this way sometimes it makes some problems
float example(float *something_external)
{
int8 i;
float something;
for(i=0;i<10;i++)
{
something+=*(something_external+i);
}
return something;
}

Any ideas?

[Ttelmah]

Incorrect syntax.....
You want.

[monsun]

Ive thought that something_external[i] is equal to *(something_external+i) using pointers??

[Ttelmah]

OK. So you do want to use it as an array?.

Question then is compiler version and chip???.

If you want to use it as an array, then 'yes' this is right, _but only if you are on a modern compiler_. Historically the older compilers did not increment pointers correctly, treating their size as '1', whatever they pointed to.
There were also problems on particular chips when you crossed page boundaries.

Best Wishes