Objective Questions in Swift2.2 @iPhone - Set C

     

Q.21 : var arr = [4,5,6,7,”Ravi"]  

           Is a

A.         Valid Declaration and Initialization of an Array

B.         Compile Time Error

C.         Run Time Error

D.        None of the Above

Q.22 : What will be the output

          var array  = [11,22,33,44,55]

          print(array.length)          

A.         Compile Time Error

B.         Run Time Error

C.         5

D.        None of the above

Q.23 : What will be the output

           var array  = [11,22,33,44,55]

           print(array.count)

    A.         Compile Time Error

B.       Run Time Error

C.         5

D.       None of the above

Q.24 Which syntax is valid for array declaration

A.        var arr : Array

B.        var arr : NSArray

C.        Both

D.        None

Q.25: What will be the output

          var array  = [11,22,33,44,55]

         print(array[3])

          

A.         Compile Time Error

B.         33

C.         44

D.        22

Q.26:  What will happen

          var array  = [11,22,33,44,55]

          array.append(1)

          print(array)

          

A.         Compile Time Error

B.         [11,22,33,44,55,1]

C.         [11,22,33,44,1]

D.        [1]

Q.27: What will be the output

          var array  = [11,22,33,44,55]

          array.removeAtIndex[2]

          print(array)

          

A.         Compile Time Error

B.         [11,22,33,55]

C.         [11,22,44,55]

D.        [11,22,33,44]

Q.28: What will be the output

          var array  = [111,22,33,404,-55]

          array.sort()

          print(array)

          

A.         Compile Time Error

B.         [22,33,111,404,-55]

C.         [-55,22,33,111,404]

D.        [111,22,33,404,-55]

Q.29: Which syntax is valid for Dictionary

     

      A.  var dictionary : NSDictionary

      B. var dictionary : Dictionary

      C. Both

      D. None

Q.30 What will be the output

        var dictionary = [“Android” : “Mobile OS”, ”Chess” :       

                                      ”Game”, ”Ravi” : “Trainer”]

       print(dictionary[“Ravi”])

A.         Mobile OS

B.         Game

C.         Trainer

D.        Compile Time Error

Answers   A     A    C     B     C     B    C    C    A    C