c++ ifstream

#include <iostream>
#include <fstream>
#include <sstream>

using namespace std;

int main(){
    
    ifstream infile;
    infile.open("testG2");
    
    string line;
    int V,E;
    
    cout<<"Read from the file"<<endl;
    for(int i=0;i<13;i++){
        getline(infile,line);
        stringstream ss(line);
        ss>>V>>E;

        cout<<V<<" "<<E<<endl;
    }


    infile.close();

    return 0;
}