[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fKnyYY9gJ6se5rT6r8KgPoGr3AER-kbfGuvqYeAz1yak":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":9,"question":15,"related":16,"source":27,"type":28},[],"2024-06-17 02:11:18",152241283,[8,8,8,8],"",{"count":10,"courseId":11,"courseImg":12,"courseName":13,"workId":14,"workName":8},9,"8336f75d6d4cb0ae106461502e8ea0e0","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F8d8e99875725bed83e7cb68c2de07f03.jpg","C++语言程序设计","e7dc66494ba849588f9d0a6ac4bc16cc","执行如下程序后的输出结果是______.#include <iostream>using namespace std;class complex {private: double re, im;public: complex (double r, double i) : re(r), im(i) { } double real ( ) const { return re; } double image ( ) const { return im; } complex &operator += (complex a) { re += a.re; im += a.im; return *this; }};void disp(const complex &z) { cout << "(" << z.real( ) << ", " << z.image( ) << ")";}\u002F\u002F ostream& operator<<(ostream &s, const complex &z) {\u002F\u002F return s << "(" << z.real( ) << ", " << z.image( ) << ")";\u002F\u002F }int main ( ) { complex x(1, -2), y(2, 3); disp(x+=y); \u002F\u002F cout << (x+=y); return 0;}",[17,29,37,46,55,64,73,82,91],{"answer":18,"createTime":19,"id":20,"options":21,"question":26,"source":27,"type":28},[],"2023-12-17 23:18:35",115017059,[22,23,24,25],"R R::operator+(const R &r)","R R::operator+( )","R R::operator<+>(const R &r)","R R::operator(+)(const R &r)","What is the correct signature for the overloaded unary operator + in class R","v1",0,{"answer":30,"createTime":19,"id":31,"options":32,"question":15,"source":27,"type":28},[],115017061,[33,34,35,36],"(1, -2)","(2, 3)","(3, 5)","(3, 1)",{"answer":38,"createTime":19,"id":39,"options":40,"question":45,"source":27,"type":28},[],115017063,[41,42,43,44],"x = 7","x = 8","x = 3","x = 4","以下程序运行的结果为( ).#include <iostream>using namespace std;template <class T>class Num {private: T x;public: Num( ) { } Num(T x) { this->x = x; } Num<T>& operator + (const Num<T>& x2) { static Num<T> temp; temp.x = x + x2.x; return temp; } void disp( ) { cout << "x = " << x; }};void main ( ) { Num<int> A(3.8), B(4.8); A = A + B; A.disp( );}",{"answer":47,"createTime":19,"id":48,"options":49,"question":54,"source":27,"type":28},[],115017065,[50,51,52,53],"operator==(const R& s)","operator=(const R& s)","R operator=(const R& s)","R operator==(const R& s)","What is the correct signature for the = operator function in class R",{"answer":56,"createTime":19,"id":57,"options":58,"question":63,"source":27,"type":28},[],115017066,[59,60,61,62],"5.0+2.0和5.0+2","5.0+2.0和5+2.0","5.0+2.0和5+2","5+2.0和5.0+2","在下列成对的表达式中,运算符"+"的意义不相同的一对是______",{"answer":65,"createTime":19,"id":66,"options":67,"question":72,"source":27,"type":28},[],115017067,[68,69,70,71],"这是运算符-的重载运算符函数","这个函数所重载的运算符一定是一个一元运算符","这是一个成员函数","这个函数不改变类的任何数据成员的值","已知一个类包含如下函数原型:VOLUME operator - (VOLUME)const; ,下列关于这个函数的叙述错误的是______",{"answer":74,"createTime":19,"id":75,"options":76,"question":81,"source":27,"type":28},[],115017068,[77,78,79,80],"R operator++(R &r)","R operator++( )","R operator++(int dummy)","R operator++(int &dummy)","What is the correct signature for the overloaded postfix ++ operator in class R",{"answer":83,"createTime":19,"id":84,"options":85,"question":90,"source":27,"type":28},[],115017069,[86,87,88,89],"long R::operator[ ](const int index)","long &operator[ ](const int index)","&long operator[ ](const int index)","long operator&[ ](const int index)","What is the correct signature for the overloaded subscript operator [ ] in class R",{"answer":92,"createTime":5,"id":6,"options":93,"question":15,"source":27,"type":28},[],[8,8,8,8]]