Copy unsigned char array

Question

What would be the best way to copy unsigned char array to another?

For example:

unsigned char q[1000];
unsigned char p[1000];

strcpy (q,&p);

The above code does not work, it gives me error saying "cannot convert parameter 1 from unsigned char [1000] to char *".

Bestir

Are you sure you didn't mean to tag this question c++ and not c? There should be no problem using strcpy with unsigned char arrays (as long as they're null-terminated) in C. At worst an off-by-default warning. – Severally

It does not matter if it is C or C++, using the &operator is always a bug here. – Erlindaerline

Answer 1

As indicated by its name, strcpy works on C string (which a unsigned char array is not).

You should consider memcpy.

Gary

You can cast an unsigned char* to char*. – Passus

Can you provide a small example as I am having problems with copying an unsigned char variable to an unsigned char array using memcpy. passing argument 2 of ‘memcpy’ makes pointer from integer without a cast [-Wint-conversion] – Shipwreck