04-05-wordcount.cpp

#include <iostream>
#include <vector>
#include <string>

struct WordCount {
    std::string word;
    int count;
};

typedef std::vector<WordCount>::size_type vec_sz;

int read(std::istream& in, std::vector<WordCount>& vec)
{
    std::string word;
    int words = 0;
    while(in >> word) {
        words++;
        bool found = false;
        for(vec_sz i = 0; i != vec.size(); ++i)
            if(vec[i].word == word) {
                vec[i].count ++;
                found = true;
                break;
            }
        if(!found) {
            WordCount wc = {word,1};
            vec.push_back(wc);
        }
    }
    return words;
}


int main()
{
    std::vector<WordCount> vec;
    int words = read(std::cin, vec);
    std::cout << "Result:" << std::endl;
    for(vec_sz i = 0; i != vec.size(); ++i)
        std::cout << vec[i].word << " " << vec[i].count << std::endl;
    std::cout << "sum=" << words << std::endl;

    return 0;
}