Functions - Set 3

1. What will be the output of the following Python code ?

    def printMax(a, b): 
    if a > b: 
   	 print(a, 'is maximum') 
    elif a == b: 
   	 print(a, 'is equal to', b) 
    else: 
    	print(b, 'is maximum') 
    printMax(3, 4) 
   

   1. 3
   2. 4
   3. 4 is maximum
   4. None of the mentioned
   Show Answer

   Answer : C
   Explain : The codition of else is true so, print(b,'is maximum' ) which is 4 is maximum.
2. What is the output of the following code ?

    x = 50 
    def func (x) : 
    x = 2 
    func (x) 
    print ('x is now', x)
    

   1. x is now 50
   2. x is now 2
   3. x is now 100
   4. Error
   Show Answer

   Answer : A
   Explain : x= is global variable where as x=2 is local variable and in function the x value is 2 but when outside function x value is 50.
3. What is the output of the following code ?

    def disp(*arg): 
    for i in arg: 
    	print(i) 
    disp(name="Rajat", age="20") 
   

   1. TypeError
   2. Rajat 20
   3. Name age
   4. None of these
   Show Answer

   Answer : A
   Explain : TypeError: disp() got an unexpected keyword argument 'name' - this show when we run this. To run this program just remove the name & age. Then run this you will see- Rajat
   20.
4. What is the return type of following function ?
   def func1():
   return 'mnp',22
   1. List
   2. dictionary
   3. string
   4. tuple
   Show Answer

   Answer : D
   Explain : It is tuple value. For list we need to use [] brackets.
5. What is the output of the following code ?

   def fun(a, b=6): 
    a=a+b 
    print(a) 
    fun(5, 4) 
   

   1. 11
   2. 9
   3. 5
   4. 4
   Show Answer

   Answer : B
   Explain : By default the value of b is 6. But in this the value of change to 4. So a+b=a=9.
6. An algorithm that calls itself directly or indirectly is called as __________.
   1. Sub Function
   2. Recursion
   3. Reverse Polish Notation
   4. Reverse Polish Notation
   Show Answer

   Answer : B
   Explain : The process in which a function calls itself directly or indirectly is called recursion and the corresponding function is called a recursive function.
7. Function defined to achieve some task as per the programmer‟s requirement is called a __________.
   1. user defined function
   2. library function
   3. built in functions
   4. All of the above.
   Show Answer

   Answer : A
   Explain : The function which is defined to achieve some task as per the programmer's requirement is called a user defined function.
8. Which of the following is not a keyword ?
   1. eval
   2. nonlocal
   3. assert
   4. finally
   Show Answer

   Answer : A
   Explain : eval is a built-in- function used in python, which is used to evaluates the specified expression.
9. What will be the output of the following ?

    def iq(a,b): 
    if(a==0): 
    	return b 
    else: 
    	return iq(a-1,a+b) 
    print(iq(3,6))
   

   1. 9
   2. 10
   3. 11
   4. 12
   Show Answer

   Answer : D
   Explain : This is recursive fucntion, which call itself automatically. 1st- value (3,6), 2nd time - (2,9), 3rd time- (1,11) and Last time (0,12). After that a==0, return b which is now 12.
10. What will be the output of the following Python code ?

     def C2F(c) : 
     return c*9/5+32 
     print (C2F(100)) 
     print (C2F(0))
     

    1. 212.0
       32.0
    2. 212
       32
    3. 314
       32.0
    4. 567
       32.0
    Show Answer

    Answer :
    Explain :
11. Which of the following statement will execute in last ?

     def s(n1): #Statement 1 
     	print(n1) #Statement 2 
     n2=4 #Statement 3 
     s(n2) #Statement 4
    

    1. Statement 1
    2. Statement 2
    3. Statement 3
    4. Statement 4
    Show Answer

    Answer :
    Explain :
12. What is the output of following code ?

    def func(a, b=5, c=10) : 
     print('a is', a, 'and b is', b, 'and c is', c) 
     func(3, 7) 
     func(25, c = 24) 
     func(c = 50, a = 100) 
    

    1. a is 7 and b is 3 and c is 10
       a is 25 and b is 5 and c is 24
       a is 5 and b is 100 and c is 50
    2. a is 3 and b is 7 and c is 10
       a is 5 and b is 25 and c is 24
       a is 50 and b is 100 and c is 5
    3. a is 3 and b is 7 and c is 10
       a is 25 and b is 5 and c is 24
       a is 100 and b is 5 and c is 50
    4. None of the mentioned
    Show Answer

    Answer : C
    Explain : By default the value of b=5 and c=10. But when function call the value given is change according to it.
13. What will be the output of the following Python code ?

     x = 50 
     def func(x): 
     	print('x is', x) 
    	 x = 2 
     	print('Changed local x to', x) 
     func(x) 
     print('x is now', x)
     

    1. x is 50
       Changed local x to 2
       x is now 50
    2. x is 50
       Changed local x to 2
       x is now 2
    3. x is 50
       Changed local x to 2
       x is now 100
    4. None of Above.
    Show Answer

    Answer : A
    Explain : The value of x=2 - in function because it is local variable. For outside the function x value is 50.
14. Which one of the following is the correct way of calling a function
    1. function_name()
    2. call function_name()
    3. ret function_name()
    4. function function_name()
    Show Answer

    Answer : A
    Explain : When we call a function, use fun_name()
15. If a function does not have a return statement, which of the following does the function return ?
    1. int
    2. null
    3. An exception is thrown without return
    4. None
    Show Answer

    Answer : D
    Explain :If a function doesn't specify a return value, it returns None