有以下程序: Class Date { public: Date(int y,int m,mt d); { year=y; month=m; day=d; } Date(int y=2000) { year=y; month=10; day=1; } Date(Date &D) { year=d.year; month=d.month; day=d.day; } Void prin
A.2
B.3
C.4
D.5
第1题:
有以下程序: class Date { public: Date(int y,int m,int d); { year = y; month = m; day = d; } Date(int y = 2000) { year = y; month = 10; day = 1; } Date(Date &d) { year = d.year; month = d.month; day = d.day; } void print() { cout<<year<<"."<<month<<"."<<day<<endl; } private: int year,month,day; }; Date fun(Date d) { Date temp; temp = d; resurn temp; } int main () { Date date1 (2000,1,1),date2 (0,0,0); Date date3 (date1); date2 = fun(date3); return 0; } 程序执行时,Date类的拷贝构造函数被调用的次数是
A.2
B.3
C.4
D.5
第2题:
有以下程序: class Date { public: Date(int y, int m, int d); year = y; month = m; day = d; Date(int y = 2000) year = y; month = 10; day = 1; Date(Date &d) { year = d.year; month = d.month; day = a.day; } void print() cout<<year<<"."<<month<<"."<<day<<end1; } private: int year, month,day; }; Date fun(Date d) Date temp; temp = d; return temp; } int main() { Date date 1 (2000,1,1),date2(0,0,0); Date date3(date 1); date2 = fun(date3); return 0; } 程序执行时,Date 类的拷贝构造函数被调用的次数是
A.2
B.3
C.4
D.5
第3题:
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,O);
Datedate3(date1);
date2=fun(date3);
return0;}
程序执行时,Date类的复制构造函数被调用的次数是( )。
A.2
B.3
C.4
D.5
第4题:
有以下程序: Class Date {public: Date(int y,int m,int d); {year=y; month=m; day=d;} Date(int y=2000) {year=y; month=10; day=1;) Date(Date &D) {year=d.year; month=d.month; day=d.day;} void print() {cout<<year<<“.”<<mo
A.2
B.3
C.4
D.5
第5题:
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( )。
A.2
B.3
C.4
D.5