SStream, multiple number from lane

#include <iostream>
#include <string>
#include <cstdlib>
#include <sstream>      // std::stringstream

using namespace std;





int main() {
//string inputString = "The code is getting better code.";


int k =0;
cin >> k;
cin.ignore();

string input;
string  word;
int sum =0;

for(int i =0 ; i<k; i++)
{
    getline(cin, input);
   // cin.ignore();
    stringstream stream(input);
    while(stream >> word!=0) {
    int number = atoi(word.c_str());
    sum += number;
    }
}
cout << sum;


}