3 ms·

My "I'm going to hell, but that's okay" C version: #include <stdio.h> #include <stdbool.h> #define when(mod, msg) do { if((i mod) == 0) { fputs(#msg, st

by daeken 14y ago

My "I'm going to hell, but that's okay" C version: #include <stdio.h> #include <stdbool.h> #define when(mod, msg) do { if((i mod) == 0) { fputs(#msg, stdout); *hit = true; } } while(0) #define through ; i <= #define engine(range) \ void rules(int, bool *);\ int main(void) { for(int i = range; ++i) { bool hit = false; rules(i, &hit); if(!hit) printf("%d", i); putchar('\n'); } } \ void rules(int i, bool *hit) engine(1 through 100) { when(% 3, Fizz); when(% 5, Buzz); } Super extensible!

KirinDave 14y ago
I'm not sure even hell will take you after doing what you just did. There is no metaphysical consequence great enough save to have experienced the writing of that.
rcsorensen 14y ago
My going to hell version: https://github.com/rcs/fizzbuzz/blob/master/bitwise.c https://github.com/rcs/fizzbuzz/blob/master/bitwise.c Choice excerpts: char fmts[] = "FizzBuzz%u"; and // Default start is 8 unsigned int start = // Shift down 1 if div5 (8 >> DIV5(mask)) // Shift down another 4 if div3 */ >> ( DIV3(mask) << 2);
LnxPrgr3 14y ago
My "I'm going to hell" C++ version: https://gist.github.com/3838042 https://gist.github.com/3838042 Or, since github's being broken right now: #include <iostream> #include <arpa/inet.h> template <int multiples_of, uint32_t noise> class Noisemaker { private: union { uint32_t noise_as_int; char noise_as_cstr[5]; }; public: Noisemaker() { noise_as_int = htonl(noise); noise_as_cstr[4] = '\0'; } bool operator()(std::ostream &out, int i) { if(i % multiples_of == 0) { out << noise_as_cstr; return true; } return false; } }; template <typename Noise1, typename Noise2> class NoisemakerPair { private: Noise1 noise1; Noise2 noise2; public: bool operator()(std::ostream &out, int i) { bool matched = false; matched |= noise1(out, i); matched |= noise2(out, i); return matched; } }; int main(int argc, char *argv[]) { NoisemakerPair<Noisemaker<3, 'Fizz'>, Noisemaker<5, 'Buzz'> > fizzbuzz; for(int i=1;i<=100;++i) { if(!fizzbuzz(std::cout, i)) std::cout << i; std::cout << std::endl; } } You can nest NoisemakerPairs to add more Noisemakers. But good luck with strings longer than 4 characters… for some absurd reason, string literals can't be template parameters. Go figure.

by daeken 14y ago

KirinDave 14y ago

I'm not sure even hell will take you after doing what you just did. There is no metaphysical consequence great enough save to have experienced the writing of that.

rcsorensen 14y ago

My going to hell version: https://github.com/rcs/fizzbuzz/blob/master/bitwise.c https://github.com/rcs/fizzbuzz/blob/master/bitwise.c Choice excerpts: char fmts[] = "FizzBuzz%u"; and // Default start is 8 unsigned int start = // Shift down 1 if div5 (8 >> DIV5(mask)) // Shift down another 4 if div3 */ >> ( DIV3(mask) << 2);

LnxPrgr3 14y ago

My "I'm going to hell" C++ version: https://gist.github.com/3838042 https://gist.github.com/3838042 Or, since github's being broken right now: #include <iostream> #include <arpa/inet.h> template <int multiples_of, uint32_t noise> class Noisemaker { private: union { uint32_t noise_as_int; char noise_as_cstr[5]; }; public: Noisemaker() { noise_as_int = htonl(noise); noise_as_cstr[4] = '\0'; } bool operator()(std::ostream &out, int i) { if(i % multiples_of == 0) { out << noise_as_cstr; return true; } return false; } }; template <typename Noise1, typename Noise2> class NoisemakerPair { private: Noise1 noise1; Noise2 noise2; public: bool operator()(std::ostream &out, int i) { bool matched = false; matched |= noise1(out, i); matched |= noise2(out, i); return matched; } }; int main(int argc, char *argv[]) { NoisemakerPair<Noisemaker<3, 'Fizz'>, Noisemaker<5, 'Buzz'> > fizzbuzz; for(int i=1;i<=100;++i) { if(!fizzbuzz(std::cout, i)) std::cout << i; std::cout << std::endl; } } You can nest NoisemakerPairs to add more Noisemakers. But good luck with strings longer than 4 characters… for some absurd reason, string literals can't be template parameters. Go figure.