【牛客带你学编程C++方向】项目练习第6期（截止5.2）

C++方向活动帖：【牛客带你学编程】【C++方向】0基础小白入门培养计划！

牛客带你学编程活动总贴：【牛客带你学编程】0基础小白入门培养计划！

C++项目练习：第6期

练习时间：4月16日-5月2日（2周，劳动节相应后延）

活动规则：

每一期一个项目，届时会开新帖发布
学员直接将答案提交到该贴评论区即可
两周后，公布导师参考答案
导师评选出当期最佳代码（将设置为精彩回复）

奖励：牛客大礼包一份（牛客定制水杯牛客定制笔牛客定制程序员徽章滑稽抱枕）

参与方式：直接将你的代码回复到本帖评论区

----------------------------------------------------

本期题目：

给定接口，使用继承编写代码，通过测试

#include <string>
#include <iostream>
#include <assert.h>
using std::string;
using std::cout;
using std::endl;
 
class Subject {
  public:
    virtual string Name() = 0;
};
 
void fillObjects(Subject *o[]) {
  //fill Calculus, English, Algebra, C++ Language, Physics
  //o[0] = new Calculus;
  //o[1] = new English;
  //o[2] = new Algebra;
  //o[3] = new Cpp;
  //o[4] = new Physics;
}
 
int main(){
  Subject *o[5];
  fillObjects(o);
 
  assert(o[0]->Name() == "Calculus");
  assert(o[1]->Name() == "English");
  assert(o[2]->Name() == "Algebra");
  assert(o[3]->Name() == "C++ Language");
  assert(o[4]->Name() == "Physics");
  cout << "pass!!!" << endl;
  return 0;
}

参与方式：直接将你的代码回复到本帖评论区

参考答案：【牛客带你学编程C++方向】项目练习第6期（参考答案）

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19届本科生

广东工业大学 C++

#include <assert.h> #include <iostream> #include <string> using std::cout; using std::endl; using std::string; class Subject { public: virtual string Name() = 0; }; class Calculus : public Subject { public: string Name() { return "Calculus"; } }; class English : public Subject { public: string Name() { return "English"; } }; class Algebra : public Subject { public: string Name() { return "Algebra"; } }; class Cpp : public Subject { public: string Name() { return "C++ Language"; } }; class Physics : public Subject { public: string Name() { return "Physics"; } }; void fillObjects(Subject *o[]) { o[0] = new Calculus; o[1] = new English; o[2] = new Algebra; o[3] = new Cpp; o[4] = new Physics; } int main() { Subject *o[5]; fillObjects(o); assert(o[0]->Name() == "Calculus"); assert(o[1]->Name() == "English"); assert(o[2]->Name() == "Algebra"); assert(o[3]->Name() == "C++ Language"); assert(o[4]->Name() == "Physics"); cout << "pass!!!" << endl; for (int i = 0; i < 5; i++) delete o[i]; return 0; }

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发布于 2018-04-16 17:22

等一分钟Miche

北京信息科技大学 Node.js

#include <string> #include <iostream> #include <assert.h> using std::string; using std::cout; using std::endl; class Subject{ public: virtual string Name() = 0; }; class Calculus :public Subject { public: string Name(){ return "Calculus"; //微积分 } }; class English :public Subject { public: string Name(){ return "English"; } }; class Algebra :public Subject { public: string Name(){ return "Algebra"; //代数 } }; class Cpp :public Subject { public: string Name(){ return "C++ Language"; } }; class Physics :public Subject { public: string Name(){ return "Physics"; } }; void fillObjects(Subject* o[]) { //fill Calculus, English, Algebra, C++ Language, Physics o[0] = new Calculus; o[1] = new English; o[2] = new Algebra; o[3] = new Cpp; o[4] = new Physics; } int main() { Subject* o[5]; fillObjects(o); assert(o[0]->Name() == "Calculus"); assert(o[1]->Name() == "English"); assert(o[2]->Name() == "Algebra"); assert(o[3]->Name() == "C++ Language"); assert(o[4]->Name() == "Physics"); cout << "pass!!!" << endl; for (int i = 0;i < 5;i++) delete o[i]; return 0; }

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发布于 2018-04-16 14:37