C++习题 复数类--重载运算符3+
时间: 1ms 内存:128M
描述:
请编写程序,处理一个复数与一个double数相加的运算,结果存放在一个double型的变量d1中,输出d1的值,再以复数形式输出此值。定义Complex(复数)类,在成员函数中包含重载类型转换运算符:
operator double() { return real; }
输入:
一个复数与一个double数
输出:
d1的值和复数形式的此值
示例输入:
3 4
2.5
示例输出:
d1=5.50
c2=(5.50, 0.00)
提示:
参考答案(内存最优[1268]):
#include <iostream>
#include <iomanip>
using namespace std;
class Complex
{
public:
Complex();
Complex(double r);
Complex(double r,double i);
operator double();
void display();
private:
double real;
double imag;
};
Complex::Complex()
{
real=0;
imag=0;
}
Complex::Complex(double r)
{
real=r;
imag=0;
}
Complex::Complex(double r,double i)
{
real=r;
imag=i;
}
Complex::operator double()
{
return real;
}
void Complex::display()
{
cout<<"("<<real<<", "<<imag<<")"<<endl;
}
int main()
{
cout<<setiosflags(ios::fixed);
cout<<setprecision(2);
double real,imag;
cin>>real>>imag;
Complex c1(real,imag);
double d1;
cin>>d1;
d1=d1+c1;
cout<<"d1="<<d1<<endl;
Complex c2=Complex(d1);
cout<<"c2=";
c2.display();
return 0;
}
参考答案(时间最优[0]):
#include <iostream>
#include <iomanip>
using namespace std;
class Complex
{
public:
Complex();
Complex(double r);
Complex(double r,double i);
operator double();
void display();
private:
double real;
double imag;
};
Complex::Complex(double r)
{
imag=0;
real=r;
}
Complex::Complex(double r,double i)
{
imag=i;
real=r;
}
Complex::operator double()
{
return real;
}
void Complex::display()
{
cout<<'('<<real<<", "<<imag<<')'<<endl;
}
int main()
{
cout<<setiosflags(ios::fixed);
cout<<setprecision(2);
double real,imag;
cin>>real>>imag;
Complex c1(real,imag);
double d1;
cin>>d1;
d1=d1+c1;
cout<<"d1="<<d1<<endl;
Complex c2=Complex(d1);
cout<<"c2=";
c2.display();
return 0;
}
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