View Compilation Error

0_0_18173864_8996.cpp: In function 'int main()':
0_0_18173864_8996.cpp:89:16: error: expected ')' before 'sizeof'
   memset(c, 0. sizeof(c));
                ^
0_0_18173864_8996.cpp:89:25: error: too few arguments to function 'void* memset(void*, int, size_t)'
   memset(c, 0. sizeof(c));
                         ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/cstring:42:0,
                 from 0_0_18173864_8996.cpp:10:
GCC4.9.2/x86_64-w64-mingw32/include/string.h:43:18: note: declared here
   void * __cdecl memset(void *_Dst,int _Val,size_t _Size);
                  ^