View Compilation Error

0_0_39127721_20711.cpp: In function 'int main()':
0_0_39127721_20711.cpp:12:16: error: 'cin' was not declared in this scope
   12 |         while (cin >> n) {
      |                ^~~
0_0_39127721_20711.cpp:1:1: note: 'std::cin' is defined in header '<iostream>'; did you forget to '#include <iostream>'?
  +++ |+#include <iostream>
    1 | using namespace std;
0_0_39127721_20711.cpp:13:17: error: 'printf' was not declared in this scope
   13 |                 printf("%.0lf",a[n]);
      |                 ^~~~~~
0_0_39127721_20711.cpp:1:1: note: 'printf' is defined in header '<cstdio>'; did you forget to '#include <cstdio>'?
  +++ |+#include <cstdio>
    1 | using namespace std;