时间限制
1s
内存限制
128MB
题目描述
复数类的声明如下:
class Complex
{
private:
double real; // 实部
double imag; // 虚部
public:
Complex();
Complex(double r, double i);
// 友元函数,复数c1 + c2(二参数对象相加)
friend Complex addCom(const Complex& c1, const Complex& c2);
// 友元函数,输出类对象c的有关数据(c为参数对象)
friend void outCom(const Complex& c);
};
要求如下:
-
实现复数类和友元函数addCom和outCom。
-
参考addCom函数为复数类增加一个友元函数minusCom,用于实现两个复数的减法
-
在main函数中,通过友元函数,实现复数的加减法和复数的输出。
输入
第1行:第1个复数的实部和虚部
第2行:需进行运算的次数,注意:是连续运算。具体结果可参考样例
第3行开始,每行输入运算类型,以及参与运算的复数的实部与虚部。“+”表示复数相加,“-”表示复数相减。
输出
每行输出复数运算后的结果,复数输出格式为“(实部,虚部)”。
#include<iostream>
using namespace std;
class Complex
{
private:
double real;
double imag;
public:
Complex()
{
real = 0;
imag = 0;
}
Complex(double r, double i)
{
real = r;
imag = i;
}
Complex(const Complex& p)
{
real = p.real;
imag = p.imag;
}
friend Complex addCom(const Complex& c1, const Complex& c2);
friend Complex subCom(const Complex& c1, const Complex& c2);
friend void outCom(const Complex& c);
friend double geti(const Complex& c1, const Complex& c2);
friend double getr(const Complex& c1, const Complex& c2);
friend double sgeti(const Complex& c1, const Complex& c2);
friend double sgetr(const Complex& c1, const Complex& c2);
};
Complex addCom(const Complex& c1, const Complex& c2)
{
return Complex(c1.real + c2.real, c1.imag + c2.imag);
}
Complex subCom(const Complex& c1, const Complex& c2)
{
return Complex(c1.real - c2.real, c1.imag - c2.imag);
}
double geti(const Complex& c1, const Complex& c2)
{
return c1.imag + c2.imag;
}
double getr(const Complex& c1, const Complex& c2)
{
return c1.real + c2.real;
}
double sgeti(const Complex& c1, const Complex& c2)
{
return c1.imag - c2.imag;
}
double sgetr(const Complex& c1, const Complex& c2)
{
return c1.real - c2.real;
}
void outCom(const Complex& c)
{
cout << "(" << c.real << "," <<c.imag << ")" << endl;
}
int main()
{
double real,imag;
cin >> real >> imag;
Complex c1(real, imag);
int t;
double r, i;
r = i = 0;
cin >> t;
for(int j=1;j<=t;j++)
{
char c;
cin >> c;
Complex C(r, i);
if (j==1)
{
if (c == '+')
{
cin >> real >> imag;
Complex c2(real, imag);
addCom(c1, c2);
r = getr(c1, c2);
i = geti(c1, c2);
}
else if (c == '-')
{
cin >> real >> imag;
Complex c2(real, imag);
addCom(c1, c2);
r = sgetr(c1, c2);
i = sgeti(c1, c2);
}
Complex a1(r, i);
outCom(a1);
}
else if (j>1)
{
if (c == '+')
{
cin >> real >> imag;
Complex c2(real, imag);
addCom(C, c2);
r = getr(C, c2);
i = geti(C, c2);
}
else if (c == '-')
{
cin >> real >> imag;
Complex c2(real, imag);
addCom(C, c2);
r = sgetr(C, c2);
i = sgeti(C, c2);
}
Complex b1(r, i);
outCom(b1);
}
}
}
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