С++ ЕНФ / LABA 4 / new / 4LB1

# include <iostream.h>
# include <conio.h>
void main()
{
 float s=0,t=0,v ;
 clrscr();
 cout<<"programma, vychislyayschaya skorost' beguna \n\n";
 cout<<" vvedite dlinu distansii(metr) \n";
  cin>>s;
 while (s<=0)
  {cout<<"dlina dolgna bit>0, " ;
   cout<<" vvedite dlinu distansii(metr) \n";
    cin>>s ;}
 cout<<"vvediye vremya(sec) \n";
  cin>>t;
 while(t<=0)
  {cout<<"vremya dolgno bit >0, ";
   cout<<"vvediye vremya(sec) \n";
    cin>>t;}
 float &rs=s,&rt=t;
 v=rs/rt;
 cout<<"skorost' beguna= "<<v<<" m/s \n\n";
 getch();
}