Files In C Language

Here’s a simplified explanation of files in C

Think of files as digital filing cabinets in C!

They store information on your computer’s hard drive, even after you close your program.

This lets you save things like:

User data (think login details or preferences)

Program settings

Results from calculations

To work with files in C, you need a special key:

This key is called a “file pointer.” It helps your program find the right cabinet and drawer.

There are three main things you can do with files:

Put stuff in (writing):

Imagine writing notes (data) onto sheets of paper (file) in the cabinet.

Take stuff out (reading):

Just like retrieving those notes to use the information later.

Close the cabinet (closing):

This is important to save your work and free up space for other things.

By using files, your C programs can:

Remember things even when you turn them off.

Share information with other programs.

Remember:

Choose the right key (mode) for what you want to do (read, write, etc.).

Always close the cabinet when you’re done!