View Compilation Error

0_0_21494187_31066.cpp: In function 'int main(int, char**)':
0_0_21494187_31066.cpp:61:32: error: ISO C++ forbids applying 'sizeof' to an expression of function type [-fpermissive]
       memset(next,0,sizeof(next));
                                ^
0_0_21494187_31066.cpp:61:33: error: cannot resolve overloaded function 'next' based on conversion to type 'void*'
       memset(next,0,sizeof(next));
                                 ^