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#include <iostream> #include <cmath> const int WIDTH = 80; const int HEIGHT = 25; const double PI = 3.14159265358979323846; int main() { for (double t = 0; t < 2 * PI; t += 0.1) { for (int y = -HEIGHT / 2; y < HEIGHT / 2; y++) { for (int x = -WIDTH / 2; x < WIDTH / 2; x++) { double dx = x * cos(t) - y * sin(t); double dy = x * sin(t) + y * cos(t); double d = sqrt(dx * dx + dy * dy); if (fabs(d - 10) < 3 || fabs(d - 20) < 3) std::cout << "*"; else std::cout << " "; } std::cout << std::endl; } std::cout << std::endl; } return 0; }
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