程序代码：

#include<iostream>

class Box
{
public:
    //构造
    Box()
    {
        Fruitname = "";
        Weight = 0;
        Color = "";
    }

    //析构
    ~Box()
    {

    }

    //添加
    void AddFruit(const string sFruitname, double dWeight, string sColor);

    //删除
    void DeleteFruit(const string sFruitname);

    //显示
    void Show();

private:
    string Fruitname;  // 名字
    double Weight;     // 重量
    string Color;      // 颜色
    string szFruitname[1024];
    string szColor[1024];
    double dbWeight[512];

};


void Box::AddFruit(const string sFruitname, double dWeight, string sColor)
{
    szFruitname[0] = sFruitname;
    szColor[0] = sColor;
    dbWeight[0] = dWeight;
}

void Box::DeleteFruit( string sFruitname)
{

    if (szFruitname[0] == sFruitname)
    {
        szFruitname[0] = "";
        szColor[0] = "";
        dbWeight[0] = 0;
    }

}

void Box::Show()
{
    if (dbWeight[0] == 0 )
    {
        cout<<"无数据"<<endl;
        return;
    }
    cout<<"水果名："<<szFruitname[0]<<"  重量："<<dbWeight[0]<<"  颜色："<<szColor[0]<<endl;
}

int main()
{
    Box box;

    string name,color,name1;
    double weight;

    cout<<"input param:"<<endl;
    cin>>name;
    cin>>weight;
    cin>>color;
    box.AddFruit(name,weight,color);
    box.Show();
    cin>>name1;
    box.DeleteFruit(name1);
    box.Show();

    return 0;

}