View Compilation Error

0_0_39028377_18705.cpp:1:1: error: 'package' does not name a type
    1 | package net.dqsy;
      | ^~~~~~~
0_0_39028377_18705.cpp:2:1: error: 'import' does not name a type
    2 | import java.util.Scanner;
      | ^~~~~~
0_0_39028377_18705.cpp:2:1: note: C++20 'import' only available with '-fmodules-ts', which is not yet enabled with '-std=c++20'
0_0_39028377_18705.cpp:3:1: error: expected unqualified-id before 'public'
    3 | public class Exe2012 {
      | ^~~~~~