View Compilation Error

0_0_29504931_9468.cpp: In function 'int main()':
0_0_29504931_9468.cpp:19:34: error: too few arguments to function 'void* memccpy(void*, const void*, int, size_t)'
             memccpy(a,0,sizeof(a));
                                  ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/cstring:42:0,
                 from 0_0_29504931_9468.cpp:7:
GCC4.9.2/x86_64-w64-mingw32/include/string.h:45:18: note: declared here
   void * __cdecl memccpy(void *_Dst,const void *_Src,int _Val,size_t _Size) __MINGW_ATTRIB_DEPRECATED_MSVC2005;
                  ^