struct與class

struct Cuboid {                                                 class Cuboid {
                                                                                public:
  int length;                                                            int length;
  int width;                                                              int width;
  int height;                                                            int height;
};                                                                         
int area(Cuboid rt)  {                                         int area() {
  return 2*(rt.length*rt.width+                              return 2*(length*width+
   rt.width*rt.height+                                                width*leight+
   rt.height*rt.length);                                               height*length));
};                                                                           }

int volumn(Cuboid rt) {                                    int volumn() {
  return rt.length*rt.width*rt.height);                   return length*width*height;
}                                                                            }   
                                                                           };
main() {                                                               main() {
  Cuboid rt={10,8,6};                                             Cuboid rt={10,8,6};
  cout << "表面積=" << area(rt) << endl;            cout << "表面積=" << rt.area() << endl;
  cout << "體積=" << volumn(rt) << endl;           cout << "體積=" << rt.volumn() << endl;
}                                                                             }

訪前述的範例，寫兩個程式， 一個使用struct，一個使用class，宣告長方形的長與寬,
並有兩個函數，一為計算周長，一為計算面積，由鍵盤輸入長與寬

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