Now I can see the structure. I need to add C language to both the code-intro.tsx (language selection) and code-quiz.tsx (quiz questions). Let me update both files:

I've added the C language section to the Interactive Code Learning feature. The changes include:

1. Language Selection: Added "C" as a new language option with a blue diamond icon and the description "Foundation of programming"
2. Quiz Questions: Added 5 C-specific quiz questions covering fundamental topics like file extensions, stdio.h header, the address-of operator (&), pointer declaration, and data type sizes

Users can now select C from the language grid and take a quiz to assess their C programming knowledge.

Now I'll add 5 more questions to each language section:

I've added 5 additional questions to each language section in the Interactive Code Learning quiz. Each language now has 10 questions total, covering a broader range of topics:

• Python: Added questions about append(), bool(), dictionaries, range(), and function definition
• JavaScript: Added questions about NaN comparison, pop(), string concatenation, JSON.parse(), and 'this' keyword
• Java: Added questions about Object class, access modifiers, static methods, collections, and integer division
• C: Added questions about malloc(), do-while loops, memory allocation, static variables, and structure pointers
• C++: Added questions about new vs malloc, virtual keyword, std namespace, references, and vectors
• C#: Added questions about LINQ, ref/out parameters, async keyword, delegates, and exception handling
• Go: Added questions about channels, defer, constants, zero values, and type definitions