/in/foo.cc: In function 'int main()':
/in/foo.cc:27:72: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
     || (date[i].day > date[j].day) && (date[i].month == date[j].month) && (date[i].year = date[j].year))
                                                                        ^