Ex.No.
1
USES OF CONTROL STATEMENTS IN PYTHON Reg.No: URK23CS5063
13.12.23
1a.Question
Write a Python program to find the factorial of a number using while loop
Aim:
The aim of this program is to write a python program to find the factorial of a number using while loop.
Algorithm:
Step1: Start the program
Step2: Initialize a variable n and prompt the user to input the number to find factorial
Step3: Initialize another variable result with an initial value of 0 to store the result
Step4: Initialize a while loop with the condition that the input number should be greater than 1
Step5: Multiply the result by I and assign the result to the variable result
Step6: Increment i by 1 and print the value the factorial
Step7: Stop the program
Program:
n = int(input("enter a number to find factorial:"))
result = 1
i=1
while n >= i:
result *= i
i += 1
print(f"The factorial of {n} is {result}")
Output: (Screenshots)
Result:
Python program to find the factorial of a number using while loop is written and executed successfully.
1
1b.Question: Write a Python program to print alphabet pattern 'E'
*****
*
*
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*
*
*****
Aim:
The aim of this program is to write and execute a python code to is to print the alphabet pattern ‘E’.
Algorithm:
Step1: Start the program.
Step2: Print 5 ‘*’ in the first and last line
Step3: Initialize 2 for loops to print the vertical “*”
Step4: End the program.
Program:
print("*"*5)
for i in range (2):
print('*')
print("*"*4)
for i in range (2):
print('*')
print('*'*5)
Output(Screenshots):
Result:
Python program to print the alphabet ‘E’ is written and executed successfully.
2
1c.Question: Write a python program to check whether the number is palindrome or not.
Aim:
The aim of this program to write and execute a python code to check whether the number is palindrome or
not.
Algorithm:
Step1: Initialize a variable a and prompt the user to input the number to check it is palindrome
Step2: Convert the number to a string and store it in the variable ‘string_number’
Step3: Reverse the number and strore it in the variable ‘reversed_number’
Step4: Check whether the ‘string_number’ is equal to the ‘reversed_number’ using the if-else conditional
Step5: Print the result
Step6: Stop the program.
Program:
a=int(input("enter number:"))
string_number=str(a)
reversed_string=string_number[::-1]
if string_number == reversed_string:
print(f'The number {string_number} is a palindrome')
else:
print('It is not a palindrome')
Output: (Screenshots):
Result:
Python program to check whether the number is palindrome or not is written and executed successfully.
