foo.c:2:1: warning: data definition has no type or storage class
 n=int(input9("miles"))
 ^
foo.c:2:1: warning: type defaults to 'int' in declaration of 'n' [-Wimplicit-int]
foo.c:2:3: error: expected expression before 'int'
 n=int(input9("miles"))
   ^~~
foo.c:3:13: warning: multi-character character constant [-Wmultichar]
 t=int(input('time'))
             ^~~~~~
foo.c:4:3: error: invalid suffix "xn" on floating constant
 w=1.6xn+0.8xt
   ^~~~~
foo.c:4:9: error: invalid suffix "xt" on floating constant
 w=1.6xn+0.8xt
         ^~~~~

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