/>
class Triangle {\x09public: /* 已知三边的任意三角形 */\x09\x09Triangle(double side1, double side2, double side3) \x09\x09{\x09\x09\x09double tmp;
\x09\x09\x09this->side1 = side1;\x09\x09\x09this->side2 = side2;\x09\x09\x09this->side3 = side3;\x09\x09\x09\x09\x09\x09perimeter = this->side1 + this->side2 + this->side3;\x09\x09\x09tmp = perimeter/2;\x09\x09\x09area = sqrt( tmp * (tmp - this->side1) * ( tmp - this->side2) * (tmp - this->side3));\x09\x09}
\x09public: double getSide1() { return side1; } double getSide2() { return side2; } double getSide3() { return side3; } public double getPerimeter() { return perimeter; } public double getArea() { return area; }\x09private:\x09\x09double side1;\x09\x09double side2;\x09\x09double side3;\x09\x09double perimeter; // 周长\x09\x09double area; // 面积};