DAY 16
WEEK 3
Using Disk Files
Most of the programs you write will use files written to a hard drive. These
files will contain information that will serve one purpose or another: data stor-
age, configuration information, and so on. Today you will learn- How to relate streams to disk files
- About C’s two disk file types
- The commands for opening a file
- How to write data to a file
- Reading data from a file
- When to close a file
- Disk file management
- Using temporary files
Relating Streams to Disk Files ..........................................................................
As you learned on Day 14, “Working with the Screen, Printer, and Keyboard,”
C performs all input and output, including disk files, by means of streams. You
saw how to use C’s predefined streams that are connected to specific devices26 448201x-CH16 8/13/02 11:13 AM Page 439