Predict Output

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 //Downloaded From www.c4cpp.co.nr  
 //(C)2009.All rights reserved.  
 #include<iostream.h>  
 #include<conio.h>  
 void main()  
 {clrscr();  
 int i=0,ua=0,ub=0,uc=0,fail=0;  
 while(i<=5)  
 {switch(i++)  
  {case 1:  
  case 2:++ua;  
  case 3:  
  case 4:++ub;  
  case 5:++uc;  
  default:++fail;  
   }  
 }  
 cout<<"    ua="<<ua<<",ub="<<ub<<",uc="<<uc<<",fail="<<fail;  
 getch();  
 }