Алгоритм - C++ - Ответ 5281642

#include <iostream>
#include <string>
#include <fstream>
#include <vector>
 
using namespace std;
 
struct Street
{
    string name;
    int number;
    vector<int> years;
};
 
int main()
{
    Street buf;
    int x, a, b, sum = 0;
    vector <Street> collection;
    
    cout << "a - b:";
    cin >> a;
    cin >> b;
 
    fstream out("file.txt", ios::out);
    
    cout << "street: ";
    while(cin >> buf.name)
    {
        cout << "number houses: ";
        cin >> buf.number;
 
        out << buf.name << " " << buf.number << " ";
        for(int i = 0; i<buf.number; ++i)
        {
            cin >> x;
            out << x << " ";
        }
 
        out << endl;
        cout << "street: ";
    }
    out.close();
 
    fstream in("file.txt", ios::in);
 
    while(in >> buf.name)
    {
        in >> buf.number;
 
        buf.years.clear();
 
        for(int i = 0; i<buf.number; ++i)
        {
            in >> x;
            buf.years.push_back(x);
        }
        collection.push_back(buf);
    }
    
    in.close();
 
    /////////////////////////////////////////////
    
 
    for(int i = 0; i<collection.size(); ++i)
    {
        cout << collection[i].name << ":" << endl;
        for(int j = 0; j<collection[i].years.size(); ++j)
            if(collection[i].years[j] >= a && collection[i].years[j] <= b)
            {
                ++sum;
                cout << collection[i].years[j] << " years" << endl;
            }
            cout << endl;
 
    }
    cout << a << " - " << b << " " << sum << " houses";
    system("pause");
 
}