?? multisetwordcount.cpp
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//: C20:MultiSetWordCount.cpp
// From Thinking in C++, 2nd Edition
// Available at http://www.BruceEckel.com
// (c) Bruce Eckel 1999
// Copyright notice in Copyright.txt
//{L} StreamTokenizer
// Count occurrences of words using a multiset
#include "StreamTokenizer.h"
#include "../require.h"
#include <string>
#include <set>
#include <fstream>
#include <iterator>
using namespace std;
int main(int argc, char* argv[]) {
requireArgs(argc, 1);
ifstream in(argv[1]);
assure(in, argv[1]);
StreamTokenizer words(in);
multiset<string> wordmset;
string word;
while((word = words.next()).size() != 0)
wordmset.insert(word);
typedef multiset<string>::iterator MSit;
MSit it = wordmset.begin();
while(it != wordmset.end()) {
pair<MSit, MSit> p=wordmset.equal_range(*it);
int count = distance(p.first, p.second);
cout << *it << ": " << count << endl;
it = p.second; // Move to the next word
}
} ///:~
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