foo.cc: In function 'int main()':
foo.cc:5:9: warning: unknown conversion type character '.' in format [-Wformat=]
    5 | scanf("%.a,b,c",&a,&b,&c);
      |         ^
foo.cc:5:7: warning: too many arguments for format [-Wformat-extra-args]
    5 | scanf("%.a,b,c",&a,&b,&c);
      |       ^~~~~~~~~
foo.cc:6:40: error: expected ')' before ';' token
    6 | printf("%.2lf",a*99+b*99.00/2.00+c/0.55;
      |       ~                                ^
      |                                        )

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