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A Tour of C++ for experienced programmers, as if C++26 is the only version that ever existed.
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12345678910111213#include <iostream>#include <complex>#include <numbers>
int main(){ std::complex<double> z(3.0, 4.0); std::cout << "real = " << z.real() << ", imag = " << z.imag() << std::endl; std::cout << "abs = " << std::abs(z) << std::endl; auto p = std::polar(2.0, std::numbers::pi/4); std::cout << "polar real = " << p.real() << std::endl; return 0;}