Question

I’m trying to read just the integers from a text file structured like this….

ALS 46000
BZK 39850
CAR 38000
//....

using ifstream.

I’ve considered 2 options.

1) Regex using Boost

2) Creating a throwaway string ( i.e. I read in a word, don’t do anything with it, then read in the score ). However, this is a last resort.

Are there any ways to express in C++ that I want the ifstream to only read in text that is an integer? I’m reluctant to use regular expressions if it turns out that there is a much simpler way to accomplish this.

Answer 1

why to make simple things complicated?

whats wrong in this :

ifstream ss("C:\\test.txt");

int score;
string name;
while( ss >> name >> score )
{
    // do something with score
}