Input stream format

I need to write some code that will read in some numbers in various formats. The problem is that there are a few different ways the numbers can be arranged.

n1 n2 n3

or

n1/n2 n3/n4 n5/n6

or

n1/n2/n3 n4/n5/n6 n7/n8/n9

This is relatively easy to solve with scanf but as my project is in C++ and I'm using streams everywhere else, I would like to solve this using streams as well.

I would appreciate some help on how to solve this problem. Thanks.

P.S. In case anybody is curious the above is a graphics format. We can either have 3 vertices alone, 3 vertices along with their corresponding texture coordinates, or 3 vertices along with their texture coordinates and normals.

>>n1/n2 n3/n4 n5/n6

Code:

---

        ifstream file("test.txt");
        vector<pair<double,double> > values;
        typedef vector<pair<double,double> >::const_iterator citer;
        double val1 = 0,val2 = 0;
        char c = 0;

        while(!file.fail())
        {
                file >> val1 >> c;
                if(file.fail() || c != '/')
                        break;
                file >> val2;
                values.push_back(make_pair(val1,val2));
        }

        for(citer i = values.begin();i != values.end();++i)
                cout << i->first << '/' << i->second << '\n';

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