/in/foo.c:1:2: error: invalid preprocessing directive #\U00004ece\U0000952e\U000076d8\U000083b7\U000053d6\U00008f93\U00005165\U00007684\U00004e09\U00004f4d\U00006b63\U00006574\U00006570
    1 | #从键盘获取输入的三位正整数
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~
/in/foo.c:2:1: warning: data definition has no type or storage class
    2 | num_str=input()
      | ^~~~~~~
/in/foo.c:2:1: warning: type defaults to 'int' in declaration of 'num_str' [-Wimplicit-int]
/in/foo.c:2:9: warning: implicit declaration of function 'input' [-Wimplicit-function-declaration]
    2 | num_str=input()
      |         ^~~~~
/in/foo.c:3:2: error: invalid preprocessing directive #\U00005bf9\U00005b57\U00007b26\U00004e32\U00008fdb\U0000884c\U00009006\U00005e8f\U00005e76\U00008f6c\U00006362\U00004e3a\U00006574\U00006570\U0000540e\U00008f93\U000051fa
    3 | #对字符串进行逆序并转换为整数后输出
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/in/foo.c:2:9: error: initializer element is not constant
    2 | num_str=input()
      |         ^~~~~
/in/foo.c:4:1: error: expected ',' or ';' before 'print'
    4 | print(int(num[::-1]))
      | ^~~~~