标签：运算 end iostream 函数返回 数学 red stl square vat
complex是一个类模板，实现了复数；
它有两个private成员变量，一个实部，一个虚部，它们的类型都是_Tp。
complex类中还包括或涉及这些部分：
complex类对float，double，long double做了specialization。将_Tp实例化为除float, double，long double之外的类型的行为是未定义的。
#include <iostream> #include <complex> using namespace std; int main() { #ifndef ONLINE_JUDGE //freopen("d:\\OJ\\uva_in.txt", "r", stdin); #endif // ONLINE_JUDGE complex<double> c1(4.0, 3.0); complex<float> c2(polar(5.0, 0.75)); cout << "c1:" << c1 << endl; cout << "c2:" << c2 << endl; // c1:(4,3) // c2:(3.65844,3.40819) cout << "c1:magnitude: " << abs(c1) << " (squred magnitude: " << norm(c1) << ") " << " phase angle:" << arg(c1) << endl; // c1:magnitude: 5 (squred magnitude: 25) phase angle:0.643501 cout << "c2:magnitude: " << abs(c2) << " (squared magnitude: " << norm(c2) << ") " << " phase angle: " << arg(c2) << endl; // c2:magnitude: 5 (squared magnitude: 25) phase angle: 0.75 cout << "c1 conjugated: " << conj(c1) << endl; cout << "c2 conjugated: " << conj(c2) << endl; // c1 conjugated: (4,-3) // c2 conjugated: (3.65844,-3.40819) cout << "4.4 + c1 * 1.8:" << 4.4 + c1 * 1.8 << endl; // 4.4 + c1 * 1.8:(11.6,5.4) cout << "c1 + c2: " << c1 + complex<double>(c2.real(), c2.imag()) << endl; // c1 + c2: (7.65844,6.40819) cout << "c1 += sqrt(c1): " << (c1 += sqrt(c1)) << endl; // c1 += sqrt(c1): (6.12132,3.70711) return 0; }
标签：运算 end iostream 函数返回 数学 red stl square vat
原文地址：https://www.cnblogs.com/jaszzz/p/13073001.html
