C++ 树类实现：定义树龄、生长和显示年龄

#include using namespace std;

class Tree { private: int ages; public: Tree(int years) { ages = years; } void Grow(int years) { ages += years; } void ShowAge() { cout << 'The age of the tree is ' << ages << ' years.' << endl; } };

int main() { Tree Pine(10); Pine.Grow(5); Pine.ShowAge(); return 0; }