foo.cc: In function 'int main()':
foo.cc:10:25: error: 'year' was not declared in this scope
  printf("%d",DaysOfYear(year),DaysOfMonth(year,month));
                         ^~~~
foo.cc:10:25: note: suggested alternative: 'char'
  printf("%d",DaysOfYear(year),DaysOfMonth(year,month));
                         ^~~~
                         char
foo.cc:10:48: error: 'month' was not declared in this scope
  printf("%d",DaysOfYear(year),DaysOfMonth(year,month));
                                                ^~~~~

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