More Examples of Disk File I/O
The following sections show several more examples of disk file I/O, such as reading and writing binary data and redirecting the standard streams. Three more I/O functions, fscanf(), fprintf(), and freopen(), are introduced, too.
Random Access to Disk Files
To help solidify your understanding of this lesson, you are encouraged to answer the quiz questions and finish the exercises provided in the Workshop before you move to the next lesson.
Q What are the differences between a text stream and a binary stream?
Reading and Writing Disk Files
The Basics of Disk File I/O
Now let's focus on how to open and close a disk data file and how to interpret error messages returned by I/O functions.
To help solidify your understanding of this hour's lesson, you are encouraged to answer the quiz questions and finish the exercises provided in the Workshop before you move to the next lesson.
Q What are the differences between a union and a structure?
Making Structures Flexible
The second application of unions is to nest a union inside a structure so that the structure can hold different types of values.
