描述 下面程序的输出结果是: destructor B destructor A 请完整写出 class A. 限制条件:不得为 class A 编写构造函数. #include <iostream> using namespace std; class A { // 在此处补充你的代码 }; class B:public A { public: ~B() { cout << "destructor B" << endl; } }; int main…
Given a two-dimensional array of positive and negative integers, a sub-rectangle is any contiguous sub-array of size 1*1 or greater located within the whole array. The sum of a rectangle is the sum of all the elements in that rectangle. In this probl…
Description In a few months the European Currency Union will become a reality. However, to join the club, the Maastricht criteria must be fulfilled, and this is not a trivial task for the countries (maybe except for Luxembourg). To enforce that Germa…