Page 231 - Computer Science V2.0 Class 11

Corrected Code:

mynum = 9

def add9():
global mynum # Declare mynum as a global variable
mynum = mynum + 9
print(mynum)

add9() # Function call
(d)
1. Default parameter (val1 = 1.1) should be placed at the end of the parameter list.
2. The function name is defined as findValue, but it is called as findvalue (case-sensitive mismatch).

Corrected Code:

def findValue(val2, val3, val1=1.1):
final = (val2 + val3) / val1
print(final)

findValue()
(e) Function call statement is written wrong.
It should be
message = greet()
2. How is math.ceil(89.7) different from math.floor (89.7)?
Ans. math.ceil(x) vs math.floor(x)
math.ceil(x): Return the ceiling of x, the smallest integer greater than or equal to x.
math.floor(x): Return the floor of x, the largest integer less than or equal to x.
For example:
>>> import math
>>> math.cell(25.369)
26
>>> math.floor(25.369)
25
3. Out of random() and randint(), which function should we use to generate random numbers between 1 and 5. Justify.
Ans. randint() function of random module returns the number between start to end.
Example:
>>> import random
>>> random.randint(1,5)
4
4. How is built-in function pow() function different from function math.pow() ? Explain with an example.
Ans. pow() is an built-in function while math.pow() function defined under the math module. Both function is used to calculate x**y i.e.
x raised to power y.
When x and y are integer and given as argument to pow() and math.pow():
pow( x, y) function returns the value as integer type, while math.pow(x, y) function returns float type value.
For example:

>>> print(type(pow(2,3)))
<class 'int'>
>>> print(type(math.pow(2,3)))

Introduction to Functions 217