C++ primer plus第六版课后编程练习答案：6.6

#define  _CRT_SECURE_NO_WARNINGS 
#include <iostream>
#include<string>
using namespace std;

struct Activist_funds
{
    string name;
    double deposit;
};

int main()
{
    int i;
    cout << "Please enter the counts of the donors: ";
    cin >> i;
    cin.get();//消除换行符对后面getline的影响
    Activist_funds* donor = new Activist_funds[i];//动态分配结构数组
    for (int k = 0; k < i; k++)
    {
        cout << "Please enter the name of the donor#"<<k+1<<": ";
        getline(cin, (donor+k)->name);
        cout << "Please enter the amount of the donor#"<<k+1<<": ";
        (cin >> (donor + k)->deposit).get();
    }
    cout << "\nGrand Patrons: \n";
    //记录大于10000的人
    int count_grand_patrons=0;
    for (int index = 0; index < i; index++)
    {
        if ((donor + index)->deposit>10000)
        {
            cout << (donor + index)->name << endl;
            count_grand_patrons++;
        }
    }
    if (count_grand_patrons == 0)
        cout << "none\n";
    cout << "\nPatrons: \n";
    //记录小于10000的人
    int count_patrons = 0;
    for (int index = 0; index < i; index++)
    {
        if ((donor + index)->deposit <= 10000)
        {
            cout << (donor + index)->name << endl;
            count_patrons++;
        }
    }
    if (count_patrons == 0)
        cout << "none\n";
    delete[]donor;//记得和new运算符的配套
    return 0;

}