How to assign pointer of an "array of object" (C++) -

i beginner in c++ confused on dynamic array. found way in site, can't seem make work "array of object" in object. break when read rec variable.

this class definition:

class alcxio { private:     alcx_io_record* rec[1];     int _count; public:      int count();     void init(cl_displaywindow window);     void addinput(int io_id);     alcx_io_record* getrec(int recid);     void on_input_down(const cl_inputevent &key, const cl_inputstate &state);     void on_input_up(const cl_inputevent &key, const cl_inputstate &state); }; 

the addinput() function:

void alcxio::addinput(int io_id) {     size_t newsize = this->_count +1;     alcx_io_record* newarr = new alcx_io_record[newsize];      memcpy( newarr, rec, _count * sizeof(alcx_io_record) );      _count = newsize;     delete [] rec;     rec[0] = newarr; } 

i aware i'm wrong on: rec[0] = newarr

but changing rec = newarr gives me error: "expression must modifiable lvalue"

any solution welcome, thank you.

remove [1] declaration, you're using pointer, not array of pointers declared now. error stems trying overwrite fact declared array - type cannot changed programmatically @ runtime, though it's technically compatible.