有如下程序: #include <iostream> using namespace std; class Complex { 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; } }; ostream& operator << (ostream& s, const Complex& z) { return s<<'('<<z.real()<<','<<z.image()<<')'; } int main() { Complex x(1,-2), y(2,3); cout << (x+=y) << endl; return 0; } 执行这个程序的输出结果是( )。
A.(1,-2)
B.(2,3)
C.(3,5)
D.(3,1)
第1题:
有以下程序,输出结果( )。 #include<iostream> using namespace std; class Complex { public: Complex(double r=0,double i=0):re(r),im(i){} double real()const{return re;} double imagoconst{return im;} Complex operator+(Complex C) const {return Complex(re+c.re,im+c.im);} private: double re,im; }; int main() { Complex a=Complex(1,1)+Complex(5); cout<<a.real()<<'+'<<a.imag()<<'i'<<end1; return 0; }
A.6+i
B.2i+5
C.6+1i
D.1i+5
第2题:
有以下程序: #include <iostream> using namespace std; class Complex { public: Complex(double r=0,double i=0):re(r),im(i){ double zeal() const {return re;} double imag() const {return im;} Complex operator+(Complex c) const { return Complex(re+c.re,im+c.im);} private: double re,im; }; int main() Complex a=Complex(1,1)+Complex(5); cout<<a.real()<<'+'<<a.imag()<<'i'<<end 1; return 0; }程序执行后的输出结果是______。
A.6+6i
B.6+1i
C.1+6i
D.1+1i
第3题:
有以下程序: #include<iostream> using namespace std; class Complex { public: Complex(dOuble r=0,dOuble i=0):re(r),im(i){} doublereal()const{return re;} doubleimag()const{return im;} Complex operator+(Complex c)const {return Complex
A.6+6i
B.6+1i
C.1+6i
D.1+1i
第4题:
有下列程序: #include<iostream> using namespace std; class Complex { double re,im; public: Complex(double r,double i):re(r),im(i){} double real()const{retum re;} double image()const{return im;} Complex& operator+=(Complex A) { r
A.(1,-2)
B.(2,3)
C.(3,5)
D.(3,1)
第5题:
有如下程序: #include<iostream> using namespace std; class Complex { 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; } }; ostream& operator<<(ostream& s, const Complex& z) { remm s<<'('<<z.real()<<','<<z.image()<<')'; } int main() { Complex x(1,-2), y(2,3); cout<<(x+=y)<<endl; return 0; } 执行这个程序的输出结果是
A.(1,-2)
B.(2,3)
C.(3,5)
D.(3,1)