View Compilation Error

0_0_39216451_13658.cpp: In function 'int main()':
0_0_39216451_13658.cpp:6:16: error: 'scanf' was not declared in this scope
    6 |         while (scanf("%d%d", &n, &m) != EOF) {
      |                ^~~~~
0_0_39216451_13658.cpp:6:41: error: 'EOF' was not declared in this scope
    6 |         while (scanf("%d%d", &n, &m) != EOF) {
      |                                         ^~~
0_0_39216451_13658.cpp:1:1: note: 'EOF' is defined in header '<cstdio>'; did you forget to '#include <cstdio>'?
  +++ |+#include <cstdio>
    1 | using namespace std;
0_0_39216451_13658.cpp:19:25: error: 'printf' was not declared in this scope
   19 |                         printf("%.2lf ", sa / m);
      |                         ^~~~~~
0_0_39216451_13658.cpp:19:25: note: 'printf' is defined in header '<cstdio>'; did you forget to '#include <cstdio>'?
0_0_39216451_13658.cpp:21:17: error: 'printf' was not declared in this scope
   21 |                 printf("\n");
      |                 ^~~~~~
0_0_39216451_13658.cpp:21:17: note: 'printf' is defined in header '<cstdio>'; did you forget to '#include <cstdio>'?