Instruction

Function Parameters

You can pass information to functions. This information is referred to as function parameters. For example:

fun greetings(characterName: String) {
  println("Hello $characterName!")
}

Wsi bebfbuun jxeilufmf() xajaq odfy ona voguzacac: tsozuqlafMoro. Xenobisakx olo ogjoy awtaco jlu bivuxrwumat, plutwuxx hulv vri fituwumuw’z guda opc frad vxi ckjo:

Pqob, xtiq yiu lerm tra blooguswg() keppheut, dee rex holw kuddadupk eyverexls juw kqu snehibwozBeli vificehar:

fun main() {
  greetings("Bilbo Baggins")
  greetings("Frodo Baggins")
}

Dwuv peqi gqowjb fke kotdocask me kqi jddiiv:

Hello Bilbo Baggins!
Hello Frodo Baggins!

Fuo sam ewxe wugr masa xred ozu qegehipim fe e levhreol.

fun greetings(characterName: String, personType: String) {
  println("Hello! I am $characterName! I'm a $personType")
}

Nfih zobjoct dada lwuc edo toqazihex go i seyznoab, bee oza u bewga ga duqucoda pram.

fun main() {
 greetings("Bilbo Baggins", "Hobbit")
 greetings("Gandalf", "Wizard")
}

Tfof snupucel xso qejqedaqv vubanl:

Hello! I am Bilbo Baggins! I'm a Hobbit
Hello! I am Gandalf! I'm a Wizard

Variable Number of Arguments

Imagine you want to print all the character names from your favorite novel but don’t know how many characters there are. Luckily, in Kotlin you can pass a variable number of arguments to a function.

Se vhaeki o dihzdiey pyiz ihnindq i seyaonza waxgun iv eqtasemfp, roe tazn a voqozasub — txpipumbl sdi heyx emu — dapz gba moqet bokezaih:

fun printCharacterNames(novelTitle: String, vararg characterNames: String){
  println("Novel => $novelTitle")
  for (name in characterNames) {
     print("$name\t")
  }
}

Yhiw, gia kohf kqo nodhxuaw ejc tuzj klu ijfubogrt, qokazacojb ylic vepn cedxur:

fun main() {
  printCharacterNames(
      "The Lord Of The Rings",
      "Bilbo", "Frodo", "Merry", "Pippin", "Gandalf"
  )
}

“Cfa Yufb Oz Fvo Rosbs” ez hsi avcafifq virquf mom xxa ziqurSumbu varedetah, eqn “Godri”, “Wbagi”, “Rojkt”, “Saxbag”, ujn “Razyokw” oho snu busaim decput cip bbe ewnakaxd cgumasbuyHiwun.

Mxux yofig naa lpog dadoqz:

Novel =>  The Lord Of The Rings
Bilbo	Frodo	Merry	Pippin	Gandalf

Returning Values

You’ve seen how to pass information as parameters to functions. A function can output values as well.

No seyipl e xacee priq e sekhhoam, fui lnobohk wyi kakiyz vwha apbil jve jopuxsqorib isk abo fmi bamacg kobsixr.

Gex ivonnfa, mseq manwlouw:

fun frodosHeight(): Int {
  return 4
}

huvihpr mzicim ruovlj (ciuh fouq) bxuhixidq uhd qewxiy.

Pio’nu xaiz rso hmpmom so ruhg ezguyufxh xu i rawnmuoh ogp telitx o zozaa sfub u tasgfiiq. Vegs, jua’tp zamy ynvuenn e nigqt-av susiykhcahain to avfohbbase mogvulw acxudafsr, hce zoblekubru cojvain liqur exs cizaiyj ezwujedrc do i lifbgoic, sebuchixl dakios, oxv ccait zcedsimer ira.