View Compilation Error

0_0_32425087_27070.cpp: In function 'int main()':
0_0_32425087_27070.cpp:14:32: error: 'scanf_s' was not declared in this scope
  while (scanf_s("%d %d", &m, &n)==2)  
                                ^
0_0_32425087_27070.cpp:17:31: error: 'memset' was not declared in this scope
   memset(book, 0, sizeof(book));
                               ^