Difference between bug and failure [closed]

Question

I want to ask about the difference between bug and failure and error, i read that the error is mistake made by people, but i conflicted between the difference between the bug and failure. I can't know the difference exactly. Can any one help please and give simple snippet for code represents the difference. Thanks a lot.

Answer 1

• Bug is a programming error - not checking array bounds, ignoring error codes, multiple deletions, memory leaks, etc. fall under this general category. Errors like this require code changes to fix (there may be work-arounds that do not require code changes, though)
• Failure is a system error - disconnection of storage, lack of network connectivity, and hardware failures are in this category. Fixing failures usually requires configuring other parts of the system, not the program itself.
• User errors are mistakes made by users - entering values incorrectly or providing incomplete data are in this category. Errors like that are fixed by the user who uses the program without anyone else's involvement.