Page 367 - C++

CBSE AISSCE 2017-2018 Marking Scheme for Computer Science
(2018-2019 Sub Code: 083 Paper Code: 91)

for P in PLACES:
if len(P)>5:
print P

(1 Mark for correct loop)
(½ Mark for checking length of place name)
(½ Mark for display desired place names)

(e) Evaluate the following Postfix notation of expression: 2

22,11,/,5,10,*,+,12,-

Ans
Element Stack Contents
22 22
11 22, 11
/ 2
5 2, 5
10 2, 5, 10
* 2, 50
+ 52
12 52, 12
- 40
OR
Any other way of stepwise evaluation

(½ Mark for evaluation till each operator)
OR
(1 Mark for only writing the correct answer without showing stack

status)

4 (a) Write a statement in Python to open a text file STORY.TXT so that new contents 1
can be added at the end of it.

Ans file= open("STORY.TXT","a") ​OR​ file.open("STORY.TXT","a")

(1 mark for correct statement)

(b) Write a method in python to read lines from a text file INDIA.TXT, to find and 2
display the occurrence of the word “India”.
For example:
If the content of the file is
_______________________________________________________________________
“India is the fastest growing economy.
India is looking for more investments around the globe.
The whole world is looking at India as a great market.
Most of the Indians can foresee the heights that India is
capable of reaching.”
_______________________________________________________________________
The output should be 4

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