CODEWITHSUNDEEP
c++stringvector
iamthewalrus
iamthewalrus

Reputation: 47

Counting occurrences of words in a string vector

I'm trying to create a dictionary that reads a file into a string vector and counts the number of times each unique word occurs. Here's what I have so far:

int main()
{
    ifstream input1;
    input1.open("Base_text.txt");

    vector<string> base_file;
    vector<int> base_count;


    if (input1.fail())
    {
        cout<<"Input file 1 opening failed."<<endl;
        exit(1);
    }

    make_dictionary(input1, base_file, base_count);


}

void make_dictionary(istream& file, vector<string>& words, vector<int>& count)
{


    string word;
    int i=0;

    while (file>>word)
    {
        words.push_back(word);
        cout<<words[i];
        i++;
    }


    for (i=0; i<words.size(); i++)
    {
        if ((words[i+1]!=words[i]))
            {
                count.push_back(i);

            }
    }

Question 1: How do I get the vector to include spaces and recognize individual words? Question 2: Any ideas how to proceed with the second part (for loop)?

Upvotes: 0

Views: 1773

Answers (1)

Narut Sereewattanawoot
Narut Sereewattanawoot

Reputation: 884

This is quite inefficient. You should use 

 std::map<string, int>

instead. It is both easier and more efficient.

Loop over the file. When you see a word, see if it's in the map. If it's not, add a new word with count 1. If it is, increment the count.

Upvotes: 5

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