View Compilation Error

0_0_36670043_20173.cpp: In function 'int main()':
0_0_36670043_20173.cpp:24:39: error: 'scanf_s' was not declared in this scope
  while (scanf_s("%d %d %d", &n, &x, &y) != EOF && n + x + y != 0)
                                       ^
0_0_36670043_20173.cpp: In function 'void input()':
0_0_36670043_20173.cpp:45:25: error: 'scanf_s' was not declared in this scope
  scanf_s(" %d %d",&x, &y);
                         ^