GBN SR.SEC.
SCHOOL, 21-D, FARIDABAD
Computer Science
PRACTICAL FILE
(2023-2024)
Name – Mehul Sood
Class - 11 A
Roll No. - 21
ACKNOWLEDGEMENT
I want to express my immense gratitude to my computer science
teacher, Mrs. Namrata Arora, for her help and guidance in
completing the investigatory project.
I would also like to thank my parents and friends who gave me their
ideas and inputs in making this project. Most of all I thank our school
management and our respected principal Mrs. Nisha Sharma for
providing us with all the facilities and opportunities to make this
project successful.
CERTIFICATE
This is to certify that Mehul Sood of class 11th A, a student of GBN
Sr. Sec. School, 21-D, Faridabad has successfully completed the
computer science project file during the academic session 2023-24
under the guidance of Mrs. Namrata Arora.
Signature
(Ms. Namrata Arora)
INDEX
S. No Practical
1 Write a program to swap two numbers without using a
third variable
2 Write a program to find whether a year is a leap year or
not
3 Find the sum of all the positive numbers entered by the
user. As soon as the user enters a negative number, stop
talking in any further input from the user and display
the sum
4 Python program to print all occurrences of words
staring with vowels
5 Write a program to generate the sequence -5, 10, -15,
20, -25….. upto n, where n is an integer input by the
user
6 Write a program to print the following pattern
1
12
123
1234
12345
7 Python program to print the no. of times a character
has occurred in the entered string
8 Write a program to print the following pattern
12345
1234
123
12
1
9 Write a program using a user defined function
myMean() to calculate the mean of floating values
stored in a list
10 Write a program to find the factorial of a number
11 Write a program to find the longest sub-string from a
string
12 Write a program using a user defined function to check
if a string is a palindrome or not
13 Write a function deleteChar() which inputs a string and
a character. The function should create a new string
after deleting all the occurrences of the character from
the string and returns the new string
14 Write a program to reverse the entered string
15 Write a program that accepts a string and replaces the
vowels with asterisks (*) and returns the new string
Write a program to swap two numbers without
using a third variable
Write a program to find whether a year is a leap
year or not
Find the sum of all the positive numbers entered
by the user. As soon as the user enters a
negative number, stop talking in any further
input from the user and display the sum
Python program to print all occurrences of
words staring with vowels
Write a program to generate the sequence -5,
10, -15, 20, -25….. upto n, where n is an integer
input by the user
Write a program to print the following pattern
1
12
123
1234
12345
Python program to print the no. of times a
character has occurred in the entered string
Write a program to print the following pattern
12345
1234
123
12
1
Write a program using a user defined function
myMean() to calculate the mean of floating
values stored in a list
Write a program to find the factorial of a
number
Write a program to find the longest sub-string
from a string
Write a program using a user defined function
to check if a string is a palindrome or not
Write a function deleteChar() which inputs a
string and a character. The function should
create a new string after deleting all the
occurrences of the character from the string and
returns the new string
Write a program to reverse the entered string
Write a program that accepts a string and
replaces the vowels with asterisks (*) and
returns the new string
