complexstd.cpp

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// ComplexStd.cpp
// --------------------------------------
// Copyright (c) Yau-Zen Chang (2002.01-) 
// All Rights Reserved.
// 本程式版权属于 张耀仁
// 使用时必需声明.
// --------------------------------------
#include <iomanip>
#include <complex>
using std::complex;
using std::polar;
using std::cout;
using std::endl;
using std::setw;

int main()
{
    complex<double>  Z1(2.4,3.7);
    complex<double>  Z2(polar(2.0, 0.8));

    cout << "Z1: " << Z1 << endl;
    cout << "Z2: " << Z2 << endl;
    cout << std::showpoint
         << std::setprecision(4);
    cout << "Z1 的实部  = " << setw(10) << Z1.real()
         << "   "
         << "Z1 的虚部= "   << setw(10) << Z1.imag()
         << endl;

    // 以极座标表示
    cout << "Z1 的长度  = " << setw(10) << abs(Z1)
         << "   norm(Z1)= " << setw(10) << norm(Z1)
         << endl;
    cout << "Z1 的相位角= " << setw(10) << arg(Z1)
         << endl;
    cout << "Z2 的长度  = " << setw(10) << abs(Z2)
         << "   norm(Z2)= " << setw(10) << norm(Z2)
         << endl;
    cout << "Z2 的相位角= " << setw(10)
         << arg(Z2)  << endl;

    // 共轭复数
    cout << "Z1 的共轭复数 =  " << conj(Z1) << endl;
    cout << "Z2 的共轭复数 =  " << conj(Z2) << endl;

    // 复数的代数计算
    cout << "4.4+Z1*1.8/(Z2-2.0)  =  " << setw(20)
         << 4.4+Z1*1.8/(Z2-2.0) << endl;
    cout << "sin(Z1) * cos(Z2)    = "  << setw(20)
         << (sin(Z1) * cos(Z2)) << endl;
    cout << "sqrt(Z1)             =  " << setw(20)
         << (sqrt(Z1)) << endl;
    cout << "log(Z1)              =  "  << setw(20)
         << (log(Z1)) << endl;
    cout << "pow(Z1, Z2)          =  " << setw(20)
         << (pow(Z1, Z2)) << endl;
    cout << "Z1 += Z2             =  " << setw(20)
         << (Z1 += Z2) << endl;
    return 0;
}