View Compilation Error

0_0_34076789_20338.cpp: In function 'int main()':
0_0_34076789_20338.cpp:66:72: error: 'scanf_s' was not declared in this scope
         for (int i = 1; i <= n; ++i) scanf_s("%lf%lf", &a[i].x, &a[i].y);
                                                                        ^
0_0_34076789_20338.cpp:70:25: error: 'scanf_s' was not declared in this scope
         scanf_s("%d", &n);
                         ^