def print_string_with_markers(strn, pValue):
    out = strn[:pValue] + '«' + strn[pValue] + '»' + strn[pValue+1:]
    return out


def extra_character_index(str1, str2):

    # Initialize the result variable to store the result
    result = 0
    # Store the length of str1 in str1_length variable
    str1_length = len(str1)
    # Store length of str2 in str2_length variable
    str2_length = len(str2)

    # Traverse the string 1 till the end and perform xor with the result
    print("\n\tTraversing the first string")
    for i in range(str1_length):
        print("\t\t", print_string_with_markers(str1, i), sep="")
        print("\t\tCurrent character:", str1[i])
        print("\t\tresult:", result)
        print("\t\tPerforming XOR operation")
        print("\t\t\tresult XOR ASCII(",
              str1[i], ") = ", result, " XOR ", (ord)(str1[i]), sep="")
        # Perform the xor operation with the result
        result = result ^ (ord)(str1[i])
        print("\t\tresult:", result, "\n")


def main():
    # given string
    string1_list = ["wxyz", "cbda", "jlkmn", "courae", "hello"]
    string2_list = ["zwxgy", "abc", "klmn", "couearg", "helo"]
    for i in range(len(string1_list)):

        print(i+1, ".\tString 1 = ",
              string1_list[i], "\n\t", "String 2 = ", string2_list[i], sep="")
        extra_character_index(string1_list[i], string2_list[i])
        print("-"*100)


if __name__ == '__main__':
    main()