/in/foo.c:1:3: error: invalid preprocessing directive #\U00008f93\U00005165\U00004e00\U00004e2a\U00006574\U00006570
    1 | # 输入一个整数
      |   ^~~~~~~~~~~~
/in/foo.c:2:1: warning: data definition has no type or storage class
    2 | x = int(input())
      | ^
/in/foo.c:2:1: warning: type defaults to 'int' in declaration of 'x' [-Wimplicit-int]
/in/foo.c:2:5: error: expected expression before 'int'
    2 | x = int(input())
      |     ^~~
/in/foo.c:4:3: error: invalid preprocessing directive #\U00005c06\U00006574\U00006570\U00008f6c\U00006362\U00004e3a\U00005b57\U00007b26\U00004e32
    4 | # 将整数转换为字符串
      |   ^~~~~~~~~~~~~~~~~~
/in/foo.c:7:3: error: invalid preprocessing directive #\U000068c0\U000067e5\U00005b57\U00007b26\U00004e32\U0000662f\U00005426\U00004e0e\U00005176\U000053cd\U00008f6c\U000076f8\U00007b49
    7 | # 检查字符串是否与其反转相等
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~