#include <stdio.h>
#include <stdlib.h>

int main()
{
   FILE *fp;
   float x1, y1, z1;
   float x2, y2, z2;

   fp = fopen("dianismata.txt", "r");
   if (!fp) {
      fprintf(stderr, "Error opening file\n");
      exit(EXIT_FAILURE);
   }

   /* Read vectors' coordinates */
   fscanf(fp, "%f%f%f", &x1, &y1, &z1);
   fscanf(fp, "%f%f%f", &x2, &y2, &z2);	  

   /* Print vectors' coordinates */
   printf("v1(x, y, z) = (%f, %f, %f)\n", x1, y1, z1);	  
   printf("v2(x, y, z) = (%f, %f, %f)\n", x2, y2, z2);

   return EXIT_SUCCESS;
}