有以下程序: classDate { public: Date(inty,intm,intd); { year=Y: month=m; day=d; } Date(inty=2000) { year=y; month=10; day=1; } Date(Date&d){ year=d.year; month=d.month; day=d.day; } voidprint( ) { cout<<year<<"."<(month<<"."<<day<<endl; } private: intyear,month,day; }; Datefun(Dated) { Datetemp; temp=d; returntemp; } intmain( ) { Datedatel(2000,1,1),date2(0,0,0); Datedate3(datel); date2=fun(date3); return0; } 程序执行时,Date类的拷贝构造函数被调用的次数是( )。
免费的网站请分享给朋友吧