Objective Questions in >= Swift2.2 @iPhone - Set E

Q.41: What will be the output

var temp = 30

if temp >= 34 {

    print("It's Cold")

}

else

{

print("It's Normal")

}

A.      Compile Time Error

B.      It’s Cold

C.      It’s Normal

D.      None

Q.42: What will be the output

let temp = 90

if temp <= 32 {

    print("It's very cold.")

} else if temp >= 86 {

    print("It's really warm.")

} else {

    print("It's Normal")

}

A.      Compile Time Error

B.      It’s very cold

C.      It’s really warm

D.      It’s Normal

Q.43: What will be the output

let char: Character = "B"

switch char {

case "A":

    print("The first letter of the alphabet")

case "B":

    print("The second letter of the alphabet")

case "Z":

    print("The last letter of the alphabet")

default:

    print("Some other character")

}

A.      The first letter of the alphabet

B.      The second letter of the alphabet

C.      The last letter of the alphabet

D.      Some other character

Q.44: What will be the output

let char: Character = "b"

switch char

{

case "b", "B":

    print("The letter is B")

default:

    print("Not B")

}

A.      Compile Time Error

B.      The letter is B

C.      Not B

D.      None of the above

Q.45: Which is not a proper function in Swift

                A. func humtum( name : String ) -> String {   

                      some code      …… 

                      return  “Hello”}

                B. func humtum( name : String ) {   

                      some code      …… 

                      }

                C. func humtum() -> String {   

                      some code      …… 

                      return  “Hello”

      }

                D. humtum( name : String ) -> String {   

                      some code      …… 

                      return  “Hello”}

Q. 46: func humtum( name : String ) -> String {                  

let display = “ Hello “ + name

                      return  display  }

                Which is proper calling statement for given function

A.      HHumtum( name : “Ravi”) 

B.      humtum()

C.      humtum( name : “Godara”)

D.      None

Q.47: func  add ( num1 : Int , num2 : Int ) -> Int

                {

                let ans = num1 + num2;

        return ans;

  }

Which is proper calling statement

A.      add ( num1 : 5 ,num2 : 10)

B.      add (5 , 10)

C.      add ( num1 : 5 ,  10)

D.      None of the above

Q.48:  func  add ( num1 : Int , num2 : Int ) -> Int

                {

                let ans = num1 + num2;

return ans;

       }

print( add ( num1 : 5 ,num2 : 10) )

What will be the output

A.      5

B.      15

C.      10

D.      Compile Time Error

Q.49: class Area

                {

                var  width  = 1 0

                var height  =  15

                }

Which is the proper syntax to create instance of given               class

A.      let object = new Area()

B.      let object = Area()

C.      object = new Area()

D.      None of the Abvove

Q.50: In the example given in Q.49

           Which is the proper syntax to access properties

A.      object->width

B.      object(width)

C.      object.width

D.      None of the above

Answers: C    C    B     B     D      C     A     B     B     C  

      

Placement Practice Set - Logical Small Questions

Prime Number:

A prime number that doesn’t have factors. Like  2  3  5  7  11  13   17……

Just see the logic how to check a given number is prime or not

// number is a variable to be checked

// count is a integer variable

// flag is used to check condition initially should be 0

   

  for(count=2; count<=number/2; count++)

    {

        if( number % count = = 0)

        {

            flag = 1;

            break;

        }

    }

    if (flag = = 0)

        printf("prime number");

    else

        printf("not a prime number");

 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

Factorial of a given number

  A.   Using loop

int main()

{

  int count , fact = 1,num;

  printf("Enter Number: ");

  scanf("%d",&num);

  for(count = 1; count < = num; count++)

  {    

  fact = fact * count;

  }

  printf("Factorial of %d is: %d",num,fact);

  return 0;

}

  B.    Using Recursion  -

           Recursion is function which calls itself , Calling itself 

           stops at a particular condition.

         int fact(int n);   // Function Declaration

         int main()

        {

         int num, result;

         printf("Enter  num: ");

         scanf("%d", &num);

         result = fact(num);      // Function Calling

         printf("Factorial of %d is %d", num, result);

         return 0;

        }

     int fact(int n)                // Function Definition

      {

       if (n <= 0)

       {

          return 1;

       }

      else

      {

          return (n * fact(n - 1));

      }  

 }

Objective Questions in Swift2.2 @iPhone - Set D

Q.31: What will be the output of

               let a = 10

               var b = 5

               b = a

               print(b)

A.         10

B.         5

C.         Error

D.         None

Q.32: What will be the output

         var  x  = -9 % -4

        print(x)

A.         -1

B.         1

C.         0

D.        Error

Q.33: What will be the output

           let  x = -9

           let y =-x

           print(y)

A.         -9

B.         9

C.         0

D.        Error

Q.34:  What will be the output

   for index in 1…4

  {   

  print(index*5)

 }

A.         5,10,15,20

B.         5

C.         20

D.        None

Q.35: What will be the output

                      let allow = true

                      if !allow

                      {

                      print("Allowed")

                      }

                      else

                      {

                      print("Not Allowed")

              }

A. Allowed

B. Not Allowed

C. Error

D. None

Q.36: What will be the output

                      let yes = true

                      let no = false

                      if yes && no

                      {

                       print("Allowed")

                      }

                      else

                      {

                     print("Not Allowed")

             }

A. Allowed

B. Not Allowed

C. Error

D. None

Q.37: What will be the output

                      let yes = true

                      let no = false

                      if yes || no

                      {

                      print("Allowed")

                      }

                      else

                      {

                     print("Not Allowed")

              }

A. Allowed

B. Not Allowed

C. Error

D. None

Q.38: What will be the output

                   var str  = String()

                   if str.isEmpty

                      {

                      print("Nothing")

                      }

                      else

                      {

                      print("Something")

              }

A. Nothing

B. Something

C. Error

D. None

Q.39: What will be the output

                      for char in "Godara".characters

                      {

                       print(char)

              }

A. Run 5 Times

B. Run 4 Times

C. Run 6 Times

D. Compile Time Error

Q.40: What will be the output

                      let name = "Ravi Godara"

                      print(name[name.startIndex])

A. Compile Time Error

B. a

C. R

D. G

Answers  A   A   B    A   B    B   A    A     C    C