C++primer plus第六版课后编程题答案 6.9

6.9

#include <iostream>
#include <string>
#include <fstream>
using namespace std;

struct donation{
string name;
double num;
};

void main69()
{
const int Size=10;//假设低于10000的少于10人
donation *p=new donation[Size];
donation *q=p;
int count=0;//用于记录低于10000的人数
ifstream fin;
fin.open("6t.txt");
if(!fin.is_open())
cout<<"Open Fail!"<<endl;
int number;
int belowW=0;
string str;
string name;
string smoney;//读取时所需
double money;
getline(fin,str);
//cout<<str;
number=atoi(str.c_str()); //string 转 int
//cout<<number;
int i=0;
cout<<"Grand Patrons:"<<endl;
while(i<number)
{
getline(fin,name);
getline(fin,smoney);
money=atoi(smoney.c_str());
if(money>10000)
cout<<"name"<<": "<<money<<endl;
else
{
q->name=name;
q->num=money;
q++;
count++;
}
i++;
}
cout<<"\n\nPatrons"<<endl;
int j=0;
q=p;
while(j<count)
{
cout<<q->name<<" ："<<q->num<<endl;
j++;
q++;
}
if(fin.eof())
{
cout<<"over"<<endl;
}

fin.close();
delete []p;

system("pause");

}