Write a program to find a specified character from a given string.

To write a program in Python that finds a specified character from a given string, you can use indexing since strings are sequences of characters. Here's a simple example:

# Given string
string = "The quick brown fox jumps over the lazy dog"

# Specified character to search for
target_char = 'o'

# Find the index of the character
index = string.find(target_char)

# Check if the character exists in the string
if index != -1:
    print(f"The character '{target_char}' is found at position {index}.")
else:
    print(f"The character '{target_char}' was not found in the string.")

Alternatively, if you need to access the last character in a string based on a pattern, you can modify the above code using regex:

import re

pattern = r'\w*$'  # Matches the end of the word
match = re.search(pattern, string)
last_word_char = match.group()[-1] if match else None

if last_word_char:
    print(f"The last character before whitespace is '{last_word_char}'.")
else:
    print("No word found before whitespace.")

Here, `re.search()` is used to find the last word, and then we access its last character.