Read text file into vector (double, double, string)? C++ -

i have text format uses latitude, longitude , name of location , example:

41.3333 34.3232 old building 

i have read text file (from command line), split each line white space, use stod convert lat , long double, read whole file vector or list.

this stuck on:

#include <fstream> #include <iostream> #include <sstream> #include <string> #include <vector>  using namespace std;  class distance{ public:     double x;     double y;     string location; };  int main(int argc, char *argv[]){     // if user didn't provide filename command line argument,     // print error , exit.     if (argc <= 1){         cout << "usage: " << argv[0] << " <filename>" << endl;         exit(1);     }      char *pfilename = argv[1];      string buf; // have buffer string     stringstream ss(argv[1]); // insert string stream     vector<string> tokens; // create vector hold our words      while (ss >> buf)         tokens.push_back(buf); } 

question:

1. could have insight on how proceed implementation?

answer: here need @ each line in file , split them whitespace store file in vector are. first number of text file latitude, second longitude, , third (string) location.

these general points whenever end using c++ :-

1. avoid pointers if can. prefer references or composite classes string in place of char *.

2. the c++ reference online can find out correct usage easily.

3. gdb can in of cases such problems in question.

as suggested in comments , have read file in string stream first , can parse it. have not compiled code below hope gives idea how this.in case, file standard input. can read in following manner :-

char buffer[1000]; // assumine each line of input not more while(cin.getline(buffer , 1000)) // constant 1000 can moved macro {     // cin not eat newline character. have make work     cin.ignore (std::numeric_limits<std::streamsize>::max(), '\n');      //discard characters until newline found     stringstream ss(buffer); // insert string stream     vector<string> tokens; // create vector hold our words     string buf ;      distance distance ;      ss>>buf;     distance.x = stod(buf);     tokens.push_back(buf);      ss>>buf;     distance.x = stod(buf);     tokens.push_back(buf);      ss>>buf;     distance.x = buf;     tokens.push_back(buf); }