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- // File from page 616 in "Thinking in C++" by Bruce Eckel
- //////////////////////////////////////////////////
- // From the compressed package ECKELT01.ZIP 2/21/95
- // Copyright (c) Bruce Eckel, 1995
- // Source code file from the book "Thinking in C++",
- // Prentice Hall, 1995, ISBN: 0-13-917709-4
- // All rights reserved EXCEPT as allowed by the following
- // statements: You may freely use this file for your own
- // work, including modifications and distribution in
- // executable form only. You may copy and distribute this
- // file, as long as it is only distributed in the complete
- // (compressed) package with the other files from this
- // book and you do not remove this copyright and notice.
- // You may not distribute modified versions of the source
- // code in this package. This package may be freely placed
- // on bulletin boards, internet nodes, shareware disks and
- // product vendor disks. You may not use this file in
- // printed media without the express permission of the
- // author. Bruce Eckel makes no
- // representation about the suitability of this software
- // for any purpose. It is provided "as is" without express
- // or implied warranty of any kind. The entire risk as to
- // the quality and performance of the software is with
- // you. Should the software prove defective, you assume
- // the cost of all necessary servicing, repair, or
- // correction.
- // If you think you've found an error, please
- // email all modified files with loudly commented changes
- // to: eckel@aol.com (please use the same
- // address for non-code errors found in the book).
- //////////////////////////////////////////////////
-
- //: ASSOC.CPP -- Test of associative array
- #include "..\14\assoc.h"
- #include "..\14\sstring.h"
- #include "..\14\integer.h"
- #include "..\allege.h"
- #include <fstream.h>
- #include <ctype.h>
-
- main() {
- const char* delimiters =
- " \t;()\"<>:{}[]+-=&*#.,/\\";
- assoc_array<SString<80>, integer> strcount;
- ifstream source("assoc.cpp");
- allegefile(source);
- ofstream out("assoc.out");
- allegefile(out);
- const bsz = 255;
- char buf[bsz];
- while(source.getline(buf, bsz)) {
- char* s = strtok(buf, delimiters);
- while(s) {
- strcount[s]++; // Count word
- s = strtok(0, delimiters);
- }
- }
- for(int i = 0; i < strcount.length(); i++) {
- out << strcount.in_value(i) << " : "
- << strcount.out_value(i) << endl;
- }
-
- // The "shopping list" problem:
- assoc_array<SString<>, integer> shoplist;
- ifstream list("shoplist.txt");
- allegefile(list);
- ofstream olist("shoplist.out");
- allegefile(olist);
- while(list.getline(buf, bsz)) {
- int i = strlen(buf) - 1; // Last char
- while(isspace(buf[i]))
- i--; // Find nonzero char at end
- while(!isspace(buf[i]))
- i--; // Back up to space or tab
- int count = atoi(&buf[i+1]); // Use value
- while(isspace(buf[i]))
- i--; // Back up to non-whitespace
- buf[i+1] = 0; // Mark end of description
- i = 0;
- while(isspace(buf[i]))
- i++; // Find start of first word
- shoplist[&buf[i]] += count;
- }
- for(int j = 0; j < shoplist.length(); j++) {
- olist << shoplist.in_value(j) << " : "
- << shoplist.out_value(j) << endl;
- }
- }
-