OK，所以在Code-Golf的精神，我在这里尝试新的东西：Code-Bowling。
在高尔夫球，你试图得到最低的得分(最小的应用程序，最优雅等)。在保龄球，你试图得到最高分。所以，如果你遵循，Code-Bowling挑战的目标是使最大，最混蛋，最难维护的代码仍然满足挑战的要求。然而，没有意义，使源更长只是为了它的缘故。它需要看起来像添加的长度是从设计，而不只是填充。
这里是这个挑战：
用您选择的语言编写一个程序，创建一行文本输出并终止。创建的输出必须与此正则表达式匹配：
/^Good (Morning|Afternoon|Evening|Night)$/
/* * TODO: write manpage */ #include <assert.h> #include <fcntl.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #define ERROR_MAX 2048 /* arbitrary,must account for argv[0] */ #define MSG_SIZE (5+9+1) /* +1 for newline,+1 for NUL */ #if defined(linux) || defined(BSD) && BSD > 199300L extern char const *__progname; # define progname __progname #else static char *progname; #endif typedef enum _Progerr { IO_ERR = 1,RND_ERR = 2 } progerr_t; static const char GREET_START[5] = "Good"; /* XXX move to Makefile? */ static const char *TIMES_OF_DAY[5] = { "Morning","Afternoon","Evening","Night",NULL }; int main() { char errbuf[ERROR_MAX]; char msgbuf[MSG_SIZE]; char *slash; const char **time_of_day; int fd,rnd; size_t greet_len; #ifndef progname /* we want proper error messages */ progname = argv[0]; if ((slash = strrchr(progname,'/')) != NULL) progname = slash+1; #endif /* get REAL randomness; can't trust rand(3). * avoid stdio,it's slow. */ #ifdef DEBUG write(STDERR_FILENO,"getting random data\n",sizeof("getting random data\n")-1); #endif if ((fd = open("/dev/urandom",O_RDONLY)) == -1) { if ((fd = open("/dev/random",O_RDONLY)) == -1) rnd = rand(); /* last resort,for MSYS etc. */ } if (fd >= 0 && read(fd,&rnd,sizeof(int)) != sizeof(int)) { close(fd); goto rngerr; } /* higher bits of rand() have better entropy */ assert(sizeof(int) >= 4); /* should be compile-time assert */ rnd = (rnd >> 24) & 0x03; for (time_of_day = TIMES_OF_DAY; *time_of_day && rnd; time_of_day++,rnd--) ; if (!time_of_day) goto rngerr; sprintf(msgbuf,"%s %s",GREET_START,*time_of_day); greet_len = strlen(msgbuf); msgbuf[greet_len] = '\n'; if (write(STDOUT_FILENO,msgbuf,greet_len+1) == -1) goto write_err; return 0; rngerr: sprintf(errbuf,"%s: cannot get random data\n",progname); write(STDERR_FILENO,errbuf,strlen(errbuf)); return (int)RND_ERR; write_err: sprintf(errbuf,"%s: cannot write to stdout\n",strlen(errbuf)); return (int)IO_ERR; }
