foo.cc: In function 'int main()':
foo.cc:7:15: warning: format '%f' expects argument of type 'float*', but argument 2 has type 'int*' [-Wformat=]
  scanf("%f",&f);
             ~~^
foo.cc:9:17: warning: too many arguments for format [-Wformat-extra-args]
  printf("&.1f",c);
                 ^
foo.cc:7:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%f",&f);
  ~~~~~^~~~~~~~~

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