Count the occurance of a word in a text file

Question

I have a text file that I am supposed to open, scan, and count the amount of times a particular word or string occurs in the text file ("#email" to be exact). I have been able to count the number of words that occurs in the whole text file but not count the number of times a particular word or string occurs. Can anyone give me any advice?

int count = 0;
std::string word;
std::string strg1("#email");
std::ifstream fin;

fin.open(filename + "-inbox.txt", std::ios::in);

while (fin >> word)
{

    if (word == strg1)
    {
        count++;
    }
}

fin.close();
return count;

Do you mean counting how many times each word appears? There's a lot of duplicates for that. — LogicStuff, Dec 04 '15 at 23:36
Unless there is something crazy about your file. I think this already works ... http://ideone.com/G5xmUu — Fantastic Mr Fox, Dec 04 '15 at 23:38
Try reading the whole file into a string (or read line by line) and then use [`std::string::find`](http://en.cppreference.com/w/cpp/string/basic_string/find) — user4581301, Dec 05 '15 at 00:12
You're right guys, this does work. I had some other line in there that I took out before posting this. My apologies. Thanks for the help. — Monsieur Dontes, Dec 05 '15 at 00:14

score 5 · Answer 1 · answered Dec 04 '15 at 23:39

5

Your code seems fine to me (and compier as well). But be aware of the fact, that istream's overloaded operator>> for std::string reads "words", which is (by means of C++), sequence of chars divided by whitespace. Your example reads such words. So in sentence

There are many #email words in this sentence (#email is located in here also), but #email, for some reason, is not here.

has only one occurence of #email (and one (#email and one #email,).

answered Dec 04 '15 at 23:39

Zereges

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But it is easy to modify the local so that punctuation is treated as space: [How to tokenzie (words) classifying punctuation as space](http://stackoverflow.com/a/6154217/14065) – Martin York Dec 05 '15 at 00:30

Count the occurance of a word in a text file

1 Answers1