1.       Write a program to read text fi le and count the number of characters in it.

2.       Write a program to read a text fi le and copy it to another text fi le.

3.       Write a program to read a text fi le and convert a specifi c word to another in the entire fi le.

4.       Pick up any employee class defi ned in earlier chapters. Store the information about employees in sorted order of their employee numbers in the fi le. Read an employee number from the keyboard and display the corresponding employee details.

5.       Write a similar program for customer class. Pick up any customer class defi ned earlier.