lab 5 (2s) all

#include <iostream>
#define _USE_MATH_DEFINES
#include <math.h>
#include <string>
#include <vector>
#include <algorithm>
using namespace std;
struct Point
{
    double x;
    double y;
};
double leng(Point a, Point b);
struct Triangle
{
    Point a;
    Point b;
    Point c;
};
struct Highs
{
    double hi1;
    double hi2;
    double hi3;
};


struct Information
{
    string Name;
    string Date;
    string Problem;
    string Status;
};
double perim(Triangle t);
double area(Triangle t);
double dist(Point p, Point a, Point b);
//void altitudes(Triangle t);
Highs altitudes(Triangle t);
int main()
{
    setlocale(LC_ALL, "Russian");
    long n;
    char ex = 'n';
    do {
        cout << "Введите номер задания: " << endl;
        char task;
        /*cin.ignore(100, '\n');*/
        cin >> task;
        switch (task)
        {
        case '1': {
            Point A, B, C, D;
            cout << "Enter Ax, Ay, Bx, By, Cx, Cy, Dx, Dy: " << endl;
            cin >> A.x >> A.y >> B.x >> B.y >> C.x >> C.y >> D.x >> D.y;
            Triangle ABC = { A, B, C };
            Triangle ABD = { A, B, D };
            Triangle ACD = { A, C, D };
            Highs resH;
            resH=altitudes(ABC);
            cout << "Your result: " << endl << "h1 = " << resH.hi1 << endl << "h2 = " << resH.hi2 << endl << "h3 = " << resH.hi3 << endl;
            resH=altitudes(ABD);
            cout << "Your result: " << endl << "h1 = " << resH.hi1 << endl << "h2 = " << resH.hi2 << endl << "h3 = " << resH.hi3 << endl;
            resH=altitudes(ACD);
            cout << "Your result: " << endl << "h1 = " << resH.hi1 << endl << "h2 = " << resH.hi2 << endl << "h3 = " << resH.hi3 << endl;
            break;
        }
        case '2': {
            int n;
            cout << "Enter n: " << endl;
            cin >> n;
            vector<Information> info(n);
            cin.ignore(100, '\n');
            cin.clear();
            for (int i = 0; i < n; i++)
            {
                cout << "Fill list " << i + 1 << ":" << endl << "Name: " << endl;
                getline(cin, info.at(i).Name);
                cout << "Date: " << endl;
                getline(cin, info.at(i).Date);
                cout << "Problem: " << endl;
                getline(cin, info.at(i).Problem);
                cout << "Status: " << endl;
                getline(cin, info.at(i).Status);
            }
            for (int i = 0; i < info.size(); i++)
            {
                if (info.at(i).Status == "processed")
                {
                    info.erase(info.begin() + i);
                }
            }
            cout << "*******************************************************************" << endl;
            cout << "Results: " << endl;
            for (int i = 0; i < info.size(); i++)
            {
                cout << "List " << i + 1 << ":" << endl << info.at(i).Name << endl << info.at(i).Date << endl << info.at(i).Problem << endl << info.at(i).Status << endl;
                cout << "             ***" << endl;
            }
            break;
        }
        default: {cout << "Нет такой задачи.\n"; } break;
        }
        cout << "Если вы хотите выйти, нажмите \'y\', в противном случае-любую другую клавишу" << endl;
        cin.ignore(100, '\n');
        cin >> ex;
    } while (ex != 'y');
    return 0;
}

double leng(Point a, Point b)
{
    double len = sqrt(pow((b.x - a.x), 2) + pow((b.y - a.y), 2));//
    return len;
}

double perim(Triangle t)
{
    double p = leng(t.a, t.b) + leng(t.b, t.c) + leng(t.c, t.a);
    return p;
}

double area(Triangle t)
{
    double p2 = perim(t) / 2;
    double s = sqrt((p2) * (p2 - leng(t.a, t.b)) * (p2 - leng(t.b, t.c)) * (p2 - leng(t.c, t.a)));
    return s;
}

double dist(Point p, Point a, Point b)
{
    Triangle tt = { p, a, b };
    double dst = 2 * (area(tt) / leng(a, b));///////////////
    return dst;
}

Highs altitudes(Triangle t)
{
    Highs myH;
    double ha, hb, hc;
    ha = dist(t.a, t.b, t.c);
    hb = dist(t.b, t.a, t.c);
    hc = dist(t.c, t.a, t.b);
    myH.hi1 = ha;
    myH.hi2 = hb;
    myH.hi3 = hc;
    //cout << "Your result: " << endl << "h1 = " << ha << endl << "h2 = " << hb << endl << "h3 = " << hc << endl;
    return myH;
}