foo.c:1:1: error: unknown type name 'import'
    1 | import math
      | ^~~~~~
foo.c:2:1: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'a'
    2 | a=int(input("同学数")
      | ^
foo.c:5:7: warning: missing terminating " character
    5 | print("教室数量”,math,ceil(s))
      |       ^
foo.c:5:7: error: missing terminating " character
    5 | print("教室数量”,math,ceil(s))
      |       ^~~~~~~~~~~~~~~~~~~~~~~~

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