foo.c:1:1: warning: data definition has no type or storage class
    1 | x = input()
      | ^
foo.c:1:1: warning: type defaults to 'int' in declaration of 'x' [-Wimplicit-int]
foo.c:1:5: warning: implicit declaration of function 'input' [-Wimplicit-function-declaration]
    1 | x = input()
      |     ^~~~~
foo.c:1:5: error: initializer element is not constant
foo.c:2:1: error: expected ',' or ';' before 'print'
    2 | print(x.reverse())
      | ^~~~~

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