View Compilation Error

0_0_28015173_24418.cpp: In function 'void init(int)':
0_0_28015173_24418.cpp:20:31: error: invalid conversion from 'int' to 'void*' [-fpermissive]
     memset(has, 0, sizeof(has));
                               ^
In file included from 0_0_28015173_24418.cpp:3:0:
GCC4.9.2/x86_64-w64-mingw32/include/string.h:43:18: note: initializing argument 1 of 'void* memset(void*, int, size_t)'
   void * __cdecl memset(void *_Dst,int _Val,size_t _Size);
                  ^
0_0_28015173_24418.cpp:31:21: error: invalid types 'int[int]' for array subscript
         if (!has[has])
                     ^
0_0_28015173_24418.cpp:33:16: error: invalid types 'int[int]' for array subscript
         has[has] = 1;
                ^
0_0_28015173_24418.cpp:45:32: error: invalid types 'int[int]' for array subscript
                 if (has[cre.num])
                                ^
0_0_28015173_24418.cpp:49:28: error: invalid types 'int[int]' for array subscript
                 has[cre.num] = 1;
                            ^