View Compilation Error

0_0_18720771_2075.cpp: In function 'int main(int, const char**)':
0_0_18720771_2075.cpp:49:33: error: invalid operands of types 'void*' and 'int' to binary 'operator%'
         memset(a, 0, sizeof(a))%3
                                 ^
0_0_18720771_2075.cpp:49:33: error: expected '}' at end of input
0_0_18720771_2075.cpp:49:33: error: expected '}' at end of input