printf("Trojuhelnik #1:\n");
   if((scanf(" %3[SU] %lf %lf %lf", str1, &a, &b, &c)) != 4){
       printf("Nespravny vstup.\n");
       return 1;
   }
   if(a<=0 || b<=0 || c<=0 || ( ( (strcmp(str1, type[0]))  != 0 ) && ( (strcmp(str1, type[1])) != 0 ) && ( (strcmp(str1, type[2])) != 0 ) ) ){
       printf("Nespravny vstup.\n");
       return 1;
   }
   else
   {
       if ( (strcmp(str1, type[0])) == 0 )
   {
        ua = acos( ( pow(a, 2) - pow(b, 2) - pow(c, 2) ) / (-2*b*c) );
        ub = acos( ( pow(b, 2) - pow(a, 2) - pow(c, 2) ) / (-2*a*c) );
        uc = acos( ( pow(c, 2) - pow(b, 2) - pow(a, 2) ) / (-2*b*a) );


        if( ( (a+b-c) <= (DBL_EPSILON * 64 * a * b *c) ) || ( (b+c-a) <= (DBL_EPSILON * 64 * a * b *c) ) || ( (a+c-b) <= (DBL_EPSILON * 64 * a * b *c) ) /*|| ( (ua+ub+uc) > (M_PI+DBL_EPSILON*M_PI) )*/ ){
       printf("Vstup netvori trojuhelnik.\n");
       return 1;
     }

   }

    if ( strcmp(str1, type[1]) == 0 )
   {
       if( fabs(b-180.0) < (DBL_EPSILON*180*b) ){
           printf("Nespravny vstup.\n");
           return 1;
           //(fabs(p1-1.0) < (DBL_EPSILON*1000)
       }

       al1 = b;
       ub = al1*( (double)M_PI/ (double)180 ) ;
       b = sqrt( pow(c, 2) + pow(a, 2) -2*c*a*cos(ub) );
       ua = acos( ( pow(a, 2) - pow(b, 2) - pow(c, 2) ) / (-2*b*c) );
       uc = acos( ( pow(c, 2) - pow(b, 2) - pow(a, 2) ) / (-2*b*a) );


       if( ( (a+b-c) <= (DBL_EPSILON * 64 * a * b *c) ) || ( (b+c-a) <= (DBL_EPSILON * 64 * a * b *c) ) || ( (a+c-b) <= (DBL_EPSILON * 64 * a * b *c) ) /*|| ( (ua+ub+uc) > (M_PI+DBL_EPSILON*M_PI) )*/ )  {
       printf("Vstup netvori trojuhelnik.\n");

       return 1;
     }
   }
   if ( strcmp(str1, type[2]) == 0  )
   {
       if( ( fabs(a-180.0) <= (DBL_EPSILON*180*a) ) || ( fabs(c-180.0) <= (DBL_EPSILON*180*c) ) ){
           printf("Nespravny vstup\n");
           return 1;
       }
       if (( fabs(a+c-180.0) <= (DBL_EPSILON*180*a*c) ))
       {
           printf("Vstup netvori trojuhelnik.\n");
       return 1;
       }

       al1 = 180.0 - a - c;
       be1 = a;
       ga1 = c;
       ua = be1*( (double)M_PI/ (double)180);
       uc = ga1*( (double)M_PI / (double)180);
       ub = al1*( (double)M_PI / (double)180);
       a = ( b*sin(ua) / sin(ub) );
       c = ( b*sin(uc) / sin(ub) );

       if( ( (a+b-c) <= (DBL_EPSILON * 64 * a * b *c) ) || ( (b+c-a) <= (DBL_EPSILON * 64 * a * b *c) ) || ( (a+c-b) <= (DBL_EPSILON * 64 * a * b *c) ) /*|| ( (ua+ub+uc) > (M_PI+DBL_EPSILON*M_PI) ) */){
       printf("Vstup netvori trojuhelnik.\n");
       return 1;
     }