/in/foo.c:1:1: warning: data definition has no type or storage class
    1 | x = input().strip()
      | ^
/in/foo.c:1:1: warning: type defaults to 'int' in declaration of 'x' [-Wimplicit-int]
/in/foo.c:1:5: warning: implicit declaration of function 'input' [-Wimplicit-function-declaration]
    1 | x = input().strip()
      |     ^~~~~
/in/foo.c:1:12: error: request for member 'strip' in something not a structure or union
    1 | x = input().strip()
      |            ^
/in/foo.c:2:1: error: expected ',' or ';' before 'print'
    2 | print(f"{x}是回文数" if x == x[::-1] else f"{x}不是回文数")
      | ^~~~~