kotlin do while loop

• fun main(args:Array<String>)
  {
      var counter=0    do {
  
              println("hey")
          counter ++
  
      }
      while (counter<=5)
  
  }

• OUTPUT 
• hey
• hey
• hey
• hey
• hey
• hey

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kotlin while loop

fun main(args:Array<String>)
{
    var counter =0    while (counter<=5)
    {
        println("counting ...$counter")
        counter++ // counter counter+1    }
    println("out of loop")
}

• counting ...0
• counting ...1
• counting ...2
• counting ...3
• counting ...4
• counting ...5
• out of loop

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kotlin for loop

fun main(args:Array<String>)
{
    for (item in 1..5)
    {
        println("hey theree $item")
    }
}

• OUTPUT  
• hey theree 1
• hey theree 2
• hey theree 3
• hey theree 4
• hey theree 5

• fun main(args:Array<String>)
  {
      for (item in 0..6)
      {
          if (item % 2 ==0)
          {//if the no is divisible by 2 or multiple of 2            println(" $item  is multiple  of $item   fizz")
          }
          else if(item%3==0)
          {
              println("buzz")
          }
  
  
  
      }
  }

• OUTPUT 
•  0  is multiple  of 0   fizz
•  2  is multiple  of 2   fizz
• buzz
•  4  is multiple  of 4   fizz
•  6  is multiple  of 6   fizz
• 
  

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kotlin when using read line

fun main(args:Array<String>)
{
    println("ENTER A NO BETWEEN 1 - 10")
    var enterno= readLine()!!.toInt()
    when(enterno)
    {
        1-> println("WRONG NO 1")
        2-> println("GET CLOSE 2")
        3-> println("CLOSER 3" )
        4-> println("HMM 4 ")
        5-> println("GOOD 5")
        else->{
            println("sorry you lost")
    }


}
}

• OUTPUT
• ENTER A NO BETWEEN 1 - 10
• 2
• GET CLOSE 2
• 
  
• Process finished with exit code 0

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kotlin when

fun main(args:Array<String>)
{
    var age:Int=19    age=16    when(age)
    {
        17-> println("17")
        18-> println("18")
        19-> println("yep 19")
        else ->
        {
           println("none of the above")
        }
    }
}

• OUTPUT none of the above
• 2

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kotlin if else statement

fun main(args:Array<String>)
{
    var firstno=8    var secno=3
   if (firstno>secno)
   {
       println("yes first no $firstno  is graater that $secno")
   }
    else   {
       println("yes")
   }
}

• OUTPUT >>> yes first no 8  is graater that 3

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kotlin conditional operator

fun main(args:Array<String>)
{
   val firstno=5    val secondno=6

    println(firstno>secondno) //return a boolear true or false
    println(firstno<secondno)

    println(firstno==secondno)
    println(firstno!=secondno)
    println(firstno<=secondno)
    println(firstno>=secondno)


}

• OUTPUT >> 
• false
• true
• false
• true
• true
• false

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KOTLIN CONVERTING DATA TYPE

fun main(args:Array<String>)
{
    var age:Int=3
    var bloodpressure=89.0
    age=bloodpressure.toInt()
    println(age)
}

• OUTPUT >>> 89

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kotline increament and decrement operator

fun main(args:Array<String>)
{
    var firstno=8    var secno=3
    var incre=firstno+1    var dec=firstno-1          println(incre)
    println(++firstno)

    println(dec)
    println(--firstno)
}

• OUTPUT >> 
• 9
• 9
• 7
• 8

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kotline remainder

fun main(args:Array<String>)
{
    var firstno=8    var secno=3    var result:Int?
    result=firstno%secno
    println("THE RESULT  IS $result")

    //or    println("THE RESULT IS ${firstno % secno }")
}

• THE RESULT  IS 2
• THE RESULT IS 2

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kotlin division

• fun main(args:Array<String>)
  {
      var firstno=2    var secno=2    var result:Int?
      result=firstno/secno
      println("THE RESULT  IS $result")
  
      //or    println("THE RESULT IS ${firstno / secno }")
  }

• THE RESULT  IS 1
• THE RESULT IS 1
• 
  
• Process finished with exit code 0

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kotlin multiplication

fun main(args:Array<String>)
{
    var firstno=2    var secno=2    var result:Int?
    result=firstno*secno
    println("THE SUM IS $result")

    //or    println("THE SUM IS ${firstno * secno *3}")
}

• OUTPUT >>> 
• THE SUM IS 4
• THE SUM IS 12
• 
  
• Process finished with exit code 0

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kotlin substraction

fun main(args:Array<String>)
{
    var firstno=100    var secno=20    var result:Int?
    result=firstno-secno
    println("THE SUM IS $result")

    //or    println("THE SUM IS ${firstno - secno }")
}

• OUTPUT >>>
• THE SUM IS 30
• THE SUM IS 150
• 
  
• Process finished with exit code 0

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kotlin addition of two no

fun main(args:Array<String>)
{
    var firstno=10    var secno=20    var result:Int?
    result=firstno+secno
    println("THE SUM IS $result")

    //or    println("THE SUM IS ${firstno + secno + 120}")
}

• THE SUM IS 30
• THE SUM IS 150
• 
  
• Process finished with exit code 0

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kotlin read line method

fun main(args:Array<String>)
{
    println("==========================")
    println("-->WELCOME TO OUR SHOP<--")
    println("==========================")
    println("HELLO WHAT CAN WE DO FOR YOU")
    var customerResponse= readLine()
    println("yes indeed we have fresh bread off the oven")
    var customersecondresponse= readLine()
    println("==========================")
    println("==========================")

}

• OUTPUT >>>
• ==========================
• -->WELCOME TO OUR SHOP<--
• ==========================
• HELLO WHAT CAN WE DO FOR YOU
• hi
• yes indeed we have fresh bread off the oven
• no
• ==========================
• ==========================
• 
  
• Process finished with exit code 0

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val and var diffrence in kotlin

val  = value cant not be change    example val pi=3.14     val url="www.google.com"
         static not meant to change , or be reassigned
 

var = can be change   example  name="raj"  name="viraj"
          meant to be reassigned
   

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Kotlin char variable type

fun main(args:Array<String>)
{
   var myChar='M'    var newChar:Char?=null    newChar='D'    println(myChar)
    println(newChar)
println(myChar + "=" + newChar)
    println("$myChar $newChar")


}

• OUTPUT >>> 
• M
• D
• M=D
• M D

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kotlin Float

fun main(args:Array<String>)
{
    var myFloat:Float?=null    myFloat=2.2F    println(myFloat)

}

• OUTPUT>>>2.2

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kotlin Boolean

• 
  

• fun main(args:Array<String>)
  {
      var myBol =true
  var newBool:Boolean?=null    newBool=false
  
      println(myBol)
      println(newBool)
  }

• OUTPUT   
• true
• false

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kotlin double variable type

• i
  
• .

fun main(args:Array<String>) {

var myDoublename=23.00
    var newDouble:Double=42.52
    println("here is my no $myDoublename")
    println("here is my no $newDouble")

}

• 
  
• OUTPUT >>> 
• here is my no 23.0
• here is my no 42.52

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