Introduction - If you have any usage issues, please Google them yourself
1, write a program to create subdirectories, the specific requirements are as follows: 1) use the keyboard to enter a directory path name, if the input string to the end of the blank, the program runs 2) If the directory is successfully created, a success message is displayed, otherwise, Create a failure message is displayed. 2, write a program to create the file, its requirements are as follows: 1) Enter the file name (including the path), if the input string is empty, the program run ends 2) If the directory is successfully created, a success message is displayed, Otherwise, create a display failure information 3) input from the keyboard 20 characters stored in the newly created file. 3, the use of file handles will merge the two files into one file. Requirements: 1) In the first carriage return line feed at the end of the file, insert " The second file as follow:" 2) carriage return line feed, the second file contents stored in the back.