View Compilation Error

0_0_30241996_16256.cpp: In function 'int main()':
0_0_30241996_16256.cpp:23:42: error: invalid conversion from 'int' to 'void*' [-fpermissive]
 #define  mes(a, b)  memset(a, b, sizeof a)
                                          ^
0_0_30241996_16256.cpp:64:5: note: in expansion of macro 'mes'
     mes(tot,0);
     ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/cstring:42:0,
                 from 0_0_30241996_16256.cpp:13:
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);
                  ^