foo.c:1:1: warning: data definition has no type or storage class
    1 | number=1
      | ^~~~~~
foo.c:1:1: warning: type defaults to 'int' in declaration of 'number' [-Wimplicit-int]
foo.c:2:1: error: expected ',' or ';' before 'a'
    2 | a=int(input())
      | ^

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