Adam 2 5 1 5 3 4
John 1 4 2 5 22 7
Kate 7 3 4 2 1 15
Bill 2222 2 22 11 111

vector<int> out;

for (int i = 0; i < line.length(); i++) {

    if (isdigit(line.at(i))) {
        stringstream const_char;
        int intValue;
        const_char << line.at(i);
        const_char >> intValue;
        out.push_back(intValue);
    }
}