如何检查最后一行字符是否出现在字符串内

def check_last_char_in_string(string):
    last_char = string[-1]  # 获取字符串的最后一个字符

    for char in string:
        if char == last_char:
            return True  # 最后一行字符出现在字符串内

    return False  # 最后一行字符未出现在字符串内

# 示例用法
string = "Hello, World!"
last_char = "d"
result = check_last_char_in_string(string)
if result:
    print(f"The last character '{last_char}' is present in the string '{string}'.")
else:
    print(f"The last character '{last_char}' is not present in the string '{string}'.")