Question

Why won’t the following C code compile? It seems like it should just change the pointers’ address but it throws an error.

int x[10];
int y[10];
y=x;

Answer 1

x and y are arrays, not pointers. In C, arrays can’t change size or location; only their contents can change. You can’t assign arrays directly.

If you want a pointer to one of the arrays you can declare one like this.

int *z = x;

If you need to assign an array you can create a struct that contains an array. structs are assignable in C.