read from file and count same strings

[ShinAngel]

I want to read from a file that contains strings and count how many strings of the same name are in the file. Number of strings on file is unknown. For example:

file.txt
--------
apple
apple
orange
red
red
red

output:
-------
file has:
apple 2
orange 1
red 3

[MiiNiPaa]

#include <iostream>
#include <fstream>
#include <map>
#include <string>


int main()
{
    std::map<std::string, int> dictionary;
    std::ifstream input("fruits.txt");
    std::string word;
    while (input >> word)
        dictionary[word]++;
    for(const auto& e: dictionary)
        std::cout << e.first << ": " << e.second << '\n';
}

[ShinAngel]

I can't run it, it says e is not initialize

[MiiNiPaa]

http://ideone.com/EZRixQ
Everything is working. Does your compiler has C++11 support turned on?

[ShinAngel]

Don't think my IDE has it, I'm using visual studio 2010.

can it be implemented in way no to use c++11

[MiiNiPaa]

sure it can be. Replace last loop with this:

for(std::map<srd::string, int>::const_iterator e = dictionary.begin(); e != dictionary.end(); ++e)
    std::cout << e->first << ": " << e->second << '\n';

[ShinAngel]

great that worked! thank you.