“-Wall"是什么意思?在“g++ -Wall test.cpp -o tes

What does quot;-Wallquot; in quot;g++ -Wall test.cpp -o testquot; do?(“-Wall是什么意思?在“g++ -Wall test.cpp -o test中做?)

问题描述

-o changes the output filename (I found that using --help)

But I can't find out what -Wall does?

It's short for "warn all" -- it turns on (almost) all the warnings that g++ can tell you about. Typically a good idea, especially if you're a beginner, because understanding and fixing those warnings can help you fix lots of different kinds of problems in your code.

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