KwickClips C++ · 40 sec · free
Which mode erases the file?
Short answer. w.
Which mode adds at the end?
a.
File modes
| Mode | Does | Old data |
|---|---|---|
| r | read | kept |
| w | write | erased |
| a | append | kept |
Remember
| w erases the file |
| a adds at the end |
One wrong letter in fopen can erase your whole file. That letter is the mode. R reads the file. W writes, but erases old data first. A appends at the end. Remember this. W erases the file. A adds at the end.
This clip is from the full lesson: File Handling in C — 6 minutes, with the tables, the quick answers and the whole lesson in text.
Useful for: Programming All levels C, Programming All levels C, Programming All levels C
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