Page 526 - ComputerScience_Class_11

Program 7: Write a program to reverse a string and count the vowels using a function.
Program 7.py

File Edit Format Run Options Window Help

def reverse_and_count_vowels(my_string):
reversed_string = my_string[::-1]
vowels = 'aeiouAEIOU'
count = sum(1 for char in my_string if char in vowels)
return reversed_string, count
text = "Hello, how many vowels?"
reversed_text, vowel_count = reverse_and_count_vowels(text)
print("Reversed string:", reversed_text)
print("Number of vowels:", vowel_count)

Output

Reversed string: ?slewov ynam woh ,olleH
Number of vowels: 6

Program 8: Write a program to count the occurrences of a specific character in a string using a function.

Program 8.py

File Edit Format Run Options Window Help

def count_char_occurrences(my_string, char_to_count):
count = 0
for char in my_string:
if char == char_to_count:
count += 1
return count
input_string = "hello world, welcome to Python programming!"
char_to_find = 'o'

occurrences = count_char_occurrences(input_string, char_to_find)
print(f"The character '{char_to_find}' appears {occurrences} times in the string.")

Output
The character 'o' appears 6 times in the string.

524 Touchpad Computer Science (Ver. 3.0)-XI