View Compilation Error

0_0_4884956_17762.cpp: In function `int main()':
0_0_4884956_17762.cpp:36: error: cannot convert `__gnu_cxx::__normal_iterator<HWork*, std::vector<HWork, std::allocator<HWork> > >' to `void*' for argument `1' to `void qsort(void*, size_t, size_t, int (*)(const void*, const void*))'
0_0_4884956_17762.cpp:49: error: name lookup of `s' changed for new ISO `for' scoping
0_0_4884956_17762.cpp:41: error:   using obsolete binding at `s'