What is the use of -Wall command while compiling C code

Question

I know that we use -g flag for storing the output to debug a C code, but what is the use of -Wall when compiling it?

Easy: Not making stupid mistakes because the compiler will warn you (`-W`) about `all` potential problems. Not literally all, but the most important ones anyway. — tadman, Feb 22 '20 at 23:27
Also useful: https://stackoverflow.com/questions/11714827/how-to-turn-on-literally-all-of-gccs-warnings — ggorlen, Feb 23 '20 at 00:34

Eraklon · Answer 1 · 2020-02-22T23:24:18.497

1

It enables most of the compiler's warning messages. See https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html.

edited Feb 22 '20 at 23:24

answered Feb 22 '20 at 23:19

Eraklon

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Not all of them. – Aykhan Hagverdili Feb 22 '20 at 23:22
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OP probably ignores them (if he asked this question). So for him it probably does nothing. – 0___________ Feb 22 '20 at 23:43

1 Answers1