View Compilation Error

0_0_39720955_11507.cpp: In function 'int main()':
0_0_39720955_11507.cpp:8:15: error: 'scanf' was not declared in this scope
    8 |         while(scanf("%d",&n)&&n!=0) {
      |               ^~~~~
0_0_39720955_11507.cpp:14:17: error: 'printf' was not declared in this scope
   14 |                 printf("%d\n",sum);
      |                 ^~~~~~
0_0_39720955_11507.cpp:1:1: note: 'printf' is defined in header '<cstdio>'; did you forget to '#include <cstdio>'?
  +++ |+#include <cstdio>
    1 | //你想干嘛