Here are PRIP 3.1 Sumita Arora Solutions for class 12 Computer Science. To view Sumita Arora solutions for all chapters, visit here.
Q.1: Carefully go through following sample code and identify various parts of functions.
(a) def sub1(a, b):
print(b, "- ", a,"=", b-a)
(b) def cube2(x):
return x*x*x-x
(c) def cube1(x):
return x*x*x
(d) def greeting():
print("Welcome to Python")
print(b, "- ", a,"=", b-a)
(b) def cube2(x):
return x*x*x-x
return x*x*x
(d) def greeting():
print("Welcome to Python")
Answer:
a) | Function Name | sub1 |
Takes any argument: If yes, their names | a, b | |
Number of statements in the function-body | 1 | |
Returns any value? | No | |
What is it doing?(Carefully read the code and write a line about its functionality) | Prints subtraction of a and b |
b) | Function Name | Cube2 |
Takes any argument: If yes, their names | x | |
Number of statements in the function-body | 1 | |
Returns any value? | yes | |
What is it doing?(Carefully read the code and write a line about its functionality) | Returns the subtraction of cube of x and x (x3-x) |
c) | Function Name | cube1 |
Takes any argument: If yes, their names | x | |
Number of statements in the function-body | 1 | |
Returns any value? | Yes | |
What is it doing?(Carefully read the code and write a line about its functionality) | Returns cube of x |
d) | Function Name | greeting |
Takes any argument: If yes, their names | No | |
Number of statements in the function-body | 1 | |
Returns any value? | No | |
What is it doing?(Carefully read the code and write a line about its functionality) | Prints “Welcome to Python” |
Q.2: There are some function call statements given below. Pick the function call statements for the function definitions given
in question 1:
(a) subtract(3, 5) (b) cube2(7, x)
(c) sub( 5, 3) (d) cube1(a, a, a)
(e) greetings('hello') (f) sub2(8,9)
(g) greeting() (h) sub1(x, y)
(i) cube1(x) (j) sub2(p, q)
(k) sub1(5,3) (k) cube2(num)
(m) sub1(8,9,10) (n) cube(7)
(c) sub( 5, 3) (d) cube1(a, a, a)
(e) greetings('hello') (f) sub2(8,9)
(g) greeting() (h) sub1(x, y)
(i) cube1(x) (j) sub2(p, q)
(k) sub1(5,3) (k) cube2(num)
(m) sub1(8,9,10) (n) cube(7)
Answer:
Function call statements for sub1() | sub1(x, y), sub1(5,3) |
Function call statements for cube1() | cube1(x) |
Function call statements for cube2() | cube2(num) |
Function call statements for greeting() | greeting() |
Q.3: If you carefully observe the function definitions of question 1, you’ll find functions sub1() and cube2() are basically doing the same thing – calculating difference between two values. Logically they are doing same thing but technically these are different. What is difference?(Hint-carefully look at the function bodies)
Answer:
Sub1() takes two argument a and b and returns subtraction of a and b.Where cube2() takes only one argument and returns subtraction between cube of x and x (x3-x)
Cube2 involves calculation of cube of x and subtraction of x3 and x i.e. 2 operations and returns value
While sub1() just prints subtraction of a and b and returns nothing
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