C/C++ :: Reading Unknown Number Of Integers In A Line?

I have a file with such a format:

string string 8 7 2
string string 7 12 19 -4
string string 1

As you can see I don't know how many numbers there are at the end. I have this code now:

while(!in.eof()) {
kr = 0;
getline(in, pavard, ','); getline(in, vard, ','); getline(in, gr, ',');
while(in.peek()) {
in >> k;
kr += k;
}
in.ignore();
}
in.close();

I tried various combinations with peek() function, but nothing worked.