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C3 is a systems language based on C. It tries to be an evolution of C, improving on what C can't easily change for legacy reasons while retaining its syntax and feel.

Changes from C:
- Module system
- Integrated build system
- Generics
- Semantic Macros
- Error handling
- Defer
- Value methods
- Associated enum data
- Subtypes
- Optional contracts
- Built-in strings, maps, subarrays and vararrays