How do i make my code display only one set of numbers out of a list of 70 that d

Question

How do i make my code display only one set of numbers out of a list of 70 that display the triangle whose area is .5 with the maximum perimeter?

static int triangles() {
   ifstream ifs;
   string path = "C:\Users\ken\Desktop\triangle.txt";

   int x1, x2, y1, y2, z1, z2;
   int count = 1;
   float A, B, C, S;
   double perimeter, area;
  
  
  
   ifs.open(path);
   if (!ifs)

   {
       cout << "file not found:" << path << endl;
       return -1;
   }

   ifs >> x1;
   while (!ifs.eof())

   {
       ifs >> x2 >> y1 >> y2 >> z1 >> z2;

       float A = sqrt((double)(y1 - x1) * (y1 - x1) + (y2 - x2) * (y2 - x2));

       float B = sqrt((double)(y1 - z1) * (y1 - z1) + (y2 - z2) * (y2 - z2));

       float C = sqrt((double)(x1 - z1) * (x1 - z1) + (x2 - z2) * (x2 - z2));

       float s = (A + B + C) / 2;

       perimeter = A + B + C;

       area = sqrt(s * (s - A) * (s - B) * (s - C));
  
           cout << "Triangle " << count << " with points(" << x1 << "," << x2 << "), (" << y1 << "," << y2 << "), (" << z1 << "," << z2 << ") has an area of " << area << ", and a maximum perimeter of" << perimeter << endl;

           ++count;

           ifs >> x1;
       }       

ifs.close();
   return 0;
}

Explanation / Answer

static int triangles() {
    ifstream ifs;
    string path = "C:\Users\ken\Desktop\triangle.txt";

    int x1, x2, y1, y2, z1, z2,mx1, mx2, my1, my2, mz1, mz2;
    int count = 1,mcount;
    float A, B, C, S;
    double perimeter, area,marea,mperimeter=0;
  
  
  
    ifs.open(path);
    if (!ifs)

    {
        cout << "file not found:" << path << endl;
        return -1;
    }

    ifs >> x1;
    while (!ifs.eof())

    {
        ifs >> x2 >> y1 >> y2 >> z1 >> z2;

        float A = sqrt((double)(y1 - x1) * (y1 - x1) + (y2 - x2) * (y2 - x2));

        float B = sqrt((double)(y1 - z1) * (y1 - z1) + (y2 - z2) * (y2 - z2));

        float C = sqrt((double)(x1 - z1) * (x1 - z1) + (x2 - z2) * (x2 - z2));

        float s = (A + B + C) / 2;

        perimeter = A + B + C;

        area = sqrt(s * (s - A) * (s - B) * (s - C));
      
      
      
        if(area==.5)//if area == 5
        {
           if(perimeter>mperimeter)//if max perimerter
           {
           mx1 = x1;mx2 = x2;my1 = y1;my2 = y2; mz1 = z1; mz2 = z2;
           marea = area;
           mperimeter = perimeter;
           mcount=count;
           }
              
       }
  
           // cout << "Triangle " << count << " with points(" << x1 << "," << x2 << "), (" << y1 << "," << y2 << "), (" << z1 << "," << z2 << ") has an area of " << area << ", and a maximum perimeter of" << perimeter << endl;

            ++count;

            ifs >> x1;
        }     

ifs.close();

//printing once
cout << "Triangle " << count << " with points(" << mx1 << "," << mx2 << "), (" << my1 << "," << my2 << "), (" << mz1 << "," << mz2 << ") has an area of " << marea << ", and a maximum perimeter of" << mperimeter << endl;
    return 0;
}

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