rounding - c++ upper value calculation -


I have double variable double dub 1. If this is a multiplier of integer 15, then I want to get the result of division (like 30/15 -> 2) if this integer is not multiple, then I think the upper value (like 20/15 -> 2 OK) I want to score with How do I handle the first part? 

  int divres = dub1 / 15; // divres ++ for the second part;    
 
 
  & lt; Cmath & gt; Use the function located in ,:  
  int divres = static_cast & lt; Int & gt; (Std :: ceil (dub1 / 15)); You can use   
 OK, without  roofing , as follows:  
  int divres = dub1 / 15; If (std :: fmod (dub1, 15)! = 0) {divres ++; }

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