Created
June 20, 2017 21:35
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#include <stdio.h> | |
#include <stdint.h> | |
#define MAX 100 | |
int | |
main(int argc, char **argv) | |
{ | |
intptr_t op[MAX + 2]; | |
int ip; | |
void *compile_ops[8] = { | |
[0] = &&op_print, | |
[1] = &&op_fizz, | |
[2] = &&op_buzz, | |
[3] = &&op_fizzbuzz, | |
[4 ... 7] = &&op_done | |
}; | |
for (ip = 0; ip < MAX + 2; ip++) | |
op[ip] = (intptr_t) compile_ops[ | |
(!(ip % 3)) | |
| ((!(ip % 5)) << 1) | |
| ((ip > MAX) << 2) | |
]; | |
ip = 0; | |
#define NEXT goto *op[++ip] | |
op_print: printf("%d\n", ip); NEXT; | |
op_fizz: puts("fizz"); NEXT; | |
op_buzz: puts("buzz"); NEXT; | |
op_fizzbuzz: puts("fizzbuzz"); NEXT; | |
op_done: | |
return 0; | |
} |
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