通过从 CIN 获取运算符的输入创建类>>



我的作业是使用以下数据成员/成员函数创建以下类。

  • 计算机
    • 内存(以 GB 为单位(。
    • 处理器速度(以千兆赫为单位(。
    • # 核心数
    • 硬盘存储大小(以 GB 为单位(。
    • 打印(虚拟功能(
  • 桌面(继承自计算机(
    • 有监视器
    • 显示器尺寸(英寸(
  • 笔记本电脑(继承自计算机(
    • 屏幕尺寸
  • 群集(继承自计算机(
  • 计算机数量

应该添加一个虚拟打印功能,并为我拥有的每台台式机/笔记本电脑输入。有人可以帮助我弄清楚为什么它不接受任何输入吗?

#include <iostream>
using namespace std;

class computers{
      public:
      int ram;
      double processor_speed;
      int num_cores;
      int hd_storage;
      computers();
      };
computers::computers()
{
 ram=0;
 processor_speed=0;
 num_cores=0;
 hd_storage=0;

}

class desktop: public computers{
      public:
      bool hasMonitor;
      double monitor_size;
      desktop();
      friend istream& operator>>(istream& isObject, desktop& desk1);
      };
desktop::desktop()
{
 hasMonitor=true;
 monitor_size=0;                 
}
istream& operator>>(istream& isObject, desktop& desk1)
      {
          isObject>>desk1.hasMonitor;
          isObject>>desk1.monitor_size;
          isObject>>desk1.ram;
          isObject>>desk1.processor_speed;
          isObject>>desk1.hd_storage;
          isObject>>desk1.num_cores;
          if(desk1.hasMonitor==0)
              desk1.hasMonitor=false;
          return isObject;
      }

class laptop:public computers{
      public:
      int screen_size;
      laptop();
      friend istream& operator>>(istream& isObject,laptop& lap1);
      };
laptop::laptop()
{
screen_size=0;                
}
istream& operator>> (istream& isObject, laptop& lap1)
{
    isObject>> lap1.ram;
    isObject>> lap1.processor_speed;
    isObject>> lap1.hd_storage;
    isObject>> lap1.num_cores;
    isObject>> lap1.screen_size;
    return isObject;
}
class cluster:public computers{
      public:
      int num_of_comps;
      friend istream& operator>>(istream& isObject,cluster& clust1);
      cluster();

      };
cluster::cluster()
{
num_of_comps=0;
}
istream& operator>>(istream& isObject,cluster& clust1)
{
    isObject >> clust1.ram;
    isObject >> clust1.processor_speed;
    isObject >> clust1.hd_storage;
    isObject >> clust1.num_cores;
    isObject >> clust1.num_of_comps;
    return isObject;
}
cluster operator+(const computers& comp1, const computers& comp2)
{
    cluster mrcluster;
    mrcluster.ram = comp1.ram+comp2.ram;
    mrcluster.processor_speed = comp1.processor_speed+comp2.processor_speed;
    mrcluster.num_cores = comp1.num_cores+comp2.num_cores;
    mrcluster.hd_storage = comp1.hd_storage+comp2.hd_storage;
    return mrcluster;
}
int main()
{
    laptop laptop1;
    desktop desktop1;
    desktop desktop2;
    cluster mycluster = laptop1+desktop1+desktop2;
    system("pause");
}

您没有要求在main函数中进行任何输入。 main是程序的入口点,因此您想要完成的任何操作都必须源自那里(例如,函数调用以请求输入(。

你需要做 cin>> 笔记本电脑1

顺便说一句,我会称您的基类计算机而不是计算机

最新更新