/in/foo.c:1:7: error: expected declaration specifiers or '...' before string constant
    1 | print("请输入学校需要购买几种图书：", end="")
      |       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/in/foo.c:1:39: error: unknown type name 'end'
    1 | print("请输入学校需要购买几种图书：", end="")
      |                                       ^~~