Hints to copy a file

• The basic idea:
  • open one file for reading and the other for writing
  • while not at the end of file of the input file
    • read the current line from the input file
    • write it to the output file
  • close both files
• To change a given line
  • add a counter to your loop
  • if it is not the line you want, continue as normal
  • if it is the line you want, write the change (but don't forget to count this line).