I am a novice user here, but Stack Overflow really helps me to learn some deep concepts in C programming. I am just really enjoying solving many questions in C here.

But there are a lot of questions related to every tag like C, string, struct, union, etc.

Is there a possibility to filter or search some really asked good questions or some nice concepts?

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Example: When I clicked the Struct tag - it shows some 9000 questions, but some of them (actually maximum) are very nice constructive and concept building.

So, here comes my question: How do I know those questions or filter them so that I can practice much of coding questions? Or, do I have to search every page and every single question?