Examples

Every example is compiled to C by the real compiler, built with your C compiler and run while this site is generated, so the output shown is real.

• Hello, worldThe smallest NanoC program: an include, a function without braces and an implicit result.
• FizzBuzzClassic FizzBuzz with early returns, elif chains and a const char pointer result.
• Loops and Collatzfor and while loops with break and continue words, plus a Collatz step counter.
• Compact CPreprocessor chains, defines, early returns and conditional blocks without braces.
• Structs and enumsEnums, structs, arrays of records and a function returning a double.
• Fixed-width typesFixed-width integers, inttypes formats, a struct shorthand and gcd.
• Linked listA singly linked list with malloc and free, written with compact pointer syntax.
• Sorting with callbacksqsort with a comparison function pointer over an array of structs.
• Bitset sieveA sieve of Eratosthenes over a bit array using function-like defines.
• Token macrosHygienic-style token templates: max, clamp and generated getter functions.
• Generic vectorOne macro generates a typed growable vector per element type: generics without a runtime.
• Scoped cleanupA with-file block macro that always closes the file: RAII in one macro.
• Compile-time tableA table of squares computed by the compiler with a translate-time program.
• Prime table at translate timeThe compiler sieves the primes below 60 and emits a constant array and a count.
• Enum and name tableAn enum and its string table generated from one list, so they cannot drift apart.
• C interopRaw C islands next to NanoC code: call libm and your own C helper functions.

Open any example in the playground to edit it and see the C change as you type.