home *** CD-ROM | disk | FTP | other *** search
- /*
- * Copyright (c) 1988 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
- #ifndef lint
- char copyright[] =
- "@(#) Copyright (c) 1988 Regents of the University of California.\n\
- All rights reserved.\n";
- #endif /* not lint */
-
- #ifndef lint
- static char sccsid[] = "@(#)number.c 5.1 (Berkeley) 2/28/91";
- #endif /* not lint */
-
- #include <stdio.h>
- #include <ctype.h>
-
- #define YES 1
- #define NO 0
- #define EOS '\0'
- #define MAXNUM 65 /* biggest number we handle */
-
- static char *name1[] = {
- "", "one", "two", "three",
- "four", "five", "six", "seven",
- "eight", "nine", "ten", "eleven",
- "twelve", "thirteen", "fourteen", "fifteen",
- "sixteen", "seventeen", "eighteen", "nineteen",
- },
- *name2[] = {
- "", "ten", "twenty", "thirty",
- "forty", "fifty", "sixty", "seventy",
- "eighty", "ninety",
- },
- *name3[] = {
- "hundred", "thousand", "million", "billion",
- "trillion", "quadrillion", "quintillion", "sextillion",
- "septillion", "octillion", "nonillion", "decillion",
- "undecillion", "duodecillion", "tredecillion", "quattuordecillion",
- "quindecillion", "sexdecillion",
- "septendecillion", "octodecillion",
- "novemdecillion", "vigintillion",
- };
-
- main(argc,argv)
- int argc;
- char **argv;
- {
- register int cnt;
- char line[MAXNUM * 2 + 2]; /* MAXNUM '.' MAXNUM '\0' */
-
- if (argc > 1)
- for (cnt = 1;cnt < argc;++cnt) {
- convert(argv[cnt]);
- puts("...");
- }
- else
- while (fgets(line,sizeof(line),stdin)) {
- convert(line);
- puts("...");
- }
- exit(0);
- }
-
- convert(line)
- char *line;
- {
- register int len,
- ret;
- register char *C,
- *fraction;
-
- for (fraction = NULL, C = line;*C && *C != '\n';++C)
- if (!isdigit(*C))
- switch(*C) {
- case '-':
- if (C != line)
- usage(NO);
- break;
- case '.':
- if (!fraction) {
- fraction = C + 1;
- *C = EOS;
- break;
- }
- default:
- usage(NO);
- }
- *C = EOS;
- if (*line == '-') {
- puts("minus");
- ++line;
- }
- ret = NO;
- if (len = strlen(line)) {
- if (len > MAXNUM)
- usage(YES);
- ret = unit(len,line);
- }
- if (fraction && (len = strlen(fraction))) {
- if (len > MAXNUM)
- usage(YES);
- for (C = fraction;*C;++C)
- if (*C != '0') {
- if (ret)
- puts("and");
- if (unit(len,fraction)) {
- ++ret;
- pfract(len);
- }
- break;
- }
- }
- if (!ret)
- puts("zero.");
- }
-
- unit(len,C)
- register int len;
- register char *C;
- {
- register int off,
- ret;
-
- ret = NO;
- if (len > 3) {
- if (len % 3) {
- off = len % 3;
- len -= off;
- if (number(C,off)) {
- ret = YES;
- printf(" %s.\n",name3[len / 3]);
- }
- C += off;
- }
- for (;len > 3;C += 3) {
- len -= 3;
- if (number(C,3)) {
- ret = YES;
- printf(" %s.\n",name3[len / 3]);
- }
- }
- }
- if (number(C,len)) {
- puts(".");
- ret = YES;
- }
- return(ret);
- }
-
- number(C,len)
- register char *C;
- int len;
- {
- register int val,
- ret;
-
- ret = 0;
- switch(len) {
- case 3:
- if (*C != '0') {
- ++ret;
- printf("%s hundred",name1[*C - '0']);
- }
- ++C;
- /*FALLTHROUGH*/
- case 2:
- val = (C[1] - '0') + (C[0] - '0') * 10;
- if (val) {
- if (ret++)
- putchar(' ');
- if (val < 20)
- fputs(name1[val],stdout);
- else {
- fputs(name2[val / 10],stdout);
- if (val % 10)
- printf("-%s",name1[val % 10]);
- }
- }
- break;
- case 1:
- if (*C != '0') {
- ++ret;
- fputs(name1[*C - '0'],stdout);
- }
- }
- return(ret);
- }
-
- pfract(len)
- register int len;
- {
- static char *pref[] = { "", "ten-", "hundred-" };
-
- switch(len) {
- case 1:
- puts("tenths.");
- break;
- case 2:
- puts("hundredths.");
- break;
- default:
- printf("%s%sths.\n",pref[len % 3],name3[len / 3]);
- }
- }
-
- usage(toobig)
- int toobig;
- {
- if (toobig)
- fprintf(stderr,"number: number too large, max %d digits.\n",MAXNUM);
- fputs("usage: number # ...\n",stderr);
- exit(-1);
- }
-