Copying arrays of structs in C

Question

It\'s been a long since I don\'t use C language, and this is driving me crazy. I have an array of structs, and I need to create a function which will copy one array to another (

Answer 1

The compiler has no information about the size of the array after passing them as pointer into a function. So you often need a third parameter: The size of the arrays to copy.

A solution (without any error checking) could be:

void copySolution(struct group* a, struct group* b, size_t size) {
    memcpy(a, b, size * sizeof(*a));
}