以下程序输出什么？ #include <iostream> class ComponentA { public: ComponentA() { std::cout << "a"; } ~ComponentA() { std::cout << "~a"; } }; class ComponentB { public: ComponentB() { std::cout << "b"; throw std::exception(); } ~ComponentB() { std::cout << "~b"; } }; class ComponentC { public: ComponentC() { std::cout << "c"; } ~ComponentC() { std::cout << "~c"; } }; class Container { ComponentA m_a; ComponentB m_b; ComponentC m_c; public: Container() { std::cout << "d"; } ~Container() { std::cout << "~d"; } }; int main() { try { Container c; } catch (std::exception const &) { } return 0; }

区块链毕设网qklbishe.com为您提供问题的解答

以下程序输出什么？
#include <iostream>
class ComponentA
{
public:
  ComponentA()
  {
    std::cout << "a";
  }
  ~ComponentA()
  {
    std::cout << "~a";
  }
};

class ComponentB
{
public:
  ComponentB()
  {
    std::cout << "b";
    throw std::exception();
  }
  ~ComponentB()
  {
    std::cout << "~b";
  }
};

class ComponentC
{
public:
  ComponentC()
  {
    std::cout << "c";
  }
  ~ComponentC()
  {
    std::cout << "~c";
  }
};

class Container
{
  ComponentA m_a;
  ComponentB m_b;
  ComponentC m_c;
public:
  Container()
  {
    std::cout << "d";
  }
  ~Container()
  {
    std::cout << "~d";
  }
};

int main()
{
  try
  {
    Container c;
  }
  catch (std::exception const &)
  {
  }
  return 0;
}

D？

29:33

注意到ComponentB的构造函数会抛出错误

 class ComponentB { public:   ComponentB()   {     std::cout << "b";  //抛出错误     throw std::exception();   }   ~ComponentB()   {     std::cout << "~b";   } };

编辑于 2024-11-19 17:50:27

以上就是关于问题以下程序输出什么？
#include <iostream>
class ComponentA
{
public:
  ComponentA()
  {
    std::cout << "a";
  }
  ~ComponentA()
  {
    std::cout << "~a";
  }
};

class ComponentB
{
public:
  ComponentB()
  {
    std::cout << "b";
    throw std::exception();
  }
  ~ComponentB()
  {
    std::cout << "~b";
  }
};

class ComponentC
{
public:
  ComponentC()
  {
    std::cout << "c";
  }
  ~ComponentC()
  {
    std::cout << "~c";
  }
};

class Container
{
  ComponentA m_a;
  ComponentB m_b;
  ComponentC m_c;
public:
  Container()
  {
    std::cout << "d";
  }
  ~Container()
  {
    std::cout << "~d";
  }
};

int main()
{
  try
  {
    Container c;
  }
  catch (std::exception const &)
  {
  }
  return 0;
}的答案

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