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a guest Oct 20th, 2019 162 Never
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  1. #include <iostream>
  2. #include <cmath>
  3. #include <time.h>
  4.  
  5.  
  6. #define LINE 128
  7.  
  8. using namespace std;
  9.  
  10. typedef struct point // структура кординаты
  11. {
  12.     int x;
  13.     int y;
  14.     int z;
  15. };
  16.  
  17.  
  18. double Volume(point l1, point l2, point l3)
  19. {
  20.     return ((l1.x*l2.y*l3.z) + (l1.y * l2.z * l3.x) + (l1.z * l2.x * l3.y) - (l1.z * l2.y * l3.x) - (l1.x * l2.z * l3.y) - (l1.y * l2.x * l3.z)) / 6.0;
  21. }
  22.  
  23. int main()
  24. {  
  25.     srand(time(0));
  26.     point listofpoints[4]; // МАССИВ точек
  27.    
  28.     for (size_t i = 0; i < 4; i++)
  29.     {
  30.         /*--------------Генерация--------------*/
  31.         point temp;
  32.         temp.x = -LINE + (rand() % (2*LINE)); temp.y = -LINE + (rand() % (2*LINE)); temp.z = -LINE + (rand() % (2*LINE));
  33.         cout << i+1 << ". " << temp.x << " " << temp.y << " " << temp.z << endl; // Вывод в терминал кординат
  34.         listofpoints[i] = temp;
  35.         /*--------------Генерация--------------*/
  36.     }
  37.    
  38.     point l1,l2,l3;
  39.  
  40.     l1.x = listofpoints[1].x - listofpoints[0].x; l1.y = listofpoints[1].y - listofpoints[0].y; l1.z = listofpoints[1].z - listofpoints[0].z;
  41.     l2.x = listofpoints[2].x - listofpoints[0].x; l2.y = listofpoints[2].y - listofpoints[0].y; l2.z = listofpoints[2].z - listofpoints[0].z;
  42.     l3.x = listofpoints[3].x - listofpoints[0].x; l3.y = listofpoints[3].y - listofpoints[0].y; l3.z = listofpoints[3].z - listofpoints[0].z;
  43.  
  44.  
  45.     cout << abs(Volume(l1,l2,l3)) << endl; // вывод объема
  46.  
  47.     cin >> l1.x;
  48.  
  49.  
  50.     return 0;
  51. }
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