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#ifndef LINE_H #define LINE_H #include "point.h" class Line // p.165 { Point startP, endP; public: Line(int startX, int startY, int endX, int endY) : startP(startX, startY), endP(endX, endY) { } float Length() const { float d; int x0, y0; x0 = startP.x_Cord() - endP.x_Cord(); y0 = startP.y_Cord() - endP.y_Cord(); d = sqrt(x0*x0 + y0*y0); return d; } }; #endif