swift - Round does not accept argument type(Int) -


i'm trying create app math test come division. know can't create repeating infinite decimals, , must keep numbers random. after generated numbers out of arc4random_uniform, i'm trying use round function. said

cannot find overload round accepts argument type (int)

how fix this?

here's code:

 var randomnumber:uint32 = arc4random_uniform(999)  var randomnumber2:uint32 = arc4random_uniform(999)  // 1000 maximum number now.  randomnumber += 1  randomnumber2 += 1  if operation.text == "/" {      if randomnumber < randomnumber2 {          var between:uint32 = 1000 - randomnumber2          randomnumber = randomnumber2 + arc4random_uniform(between - 1)          // making sure randomnumber not smaller randomnumber2,          // therefore results positive.      }      var answer:int = round(int(randomnumber)/int(randomnumber2))  }

you have pass float value round since doesn't have prototypes using int value: 

var answer = round(float(randomnumber)/float(randomnumber2))

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