Reading integers separated by space in C++ using strtok

Question

I am trying to read various lines from the user using strtok but some kind of problem seems to be happenning and I can´t understand why the program doesn't even print the debug values I had. Hope that some of you can help with it.

char* token;
char line[256];
int operations;
int time, depN;
vector<int> dep;

cin >> operations;
cout << "number operations " << operations << endl;

for(int i = 0; i< operations; i++){
   cin.getline(line,256);
   token = strtok(line, " ");
   cout << token << "--" << endl;
   time = stoi(token);
   while((token=strtok(nullptr, " ")) != nullptr){
      if(!flag){
         depN = stoi(token);
         cout << "DepN: " << depN << endl;
         flag = true;
      }else{
         dep.push_back(stoi(token));
      }
   }
   ...
   dep.clear();
}

Answer 1

Looks like the token is space. You can use stringstream.

for(int i = 0; i < operations; i++) {
    std::string line;
    if (std::getline(cin, line)) {
        std::stringstream ss(line);
        if (ss >> time) {
            int token;
            while (ss >> token) {
                dep.push_back(token);
            }
        }
    }
}

Not sure what flag is for so I left that out.