0

I need to read g file like this:

  Osdvkjjl         7.1458005606        2.5562589310       10.7851154376
  Hasdv         6.8994379944        3.3007138599       10.1549586070
  Hvfwa         8.0612423839        2.8263185824       11.0131654338
  Ovas        0.7277996403        7.7406838010        6.7174824649
  Hksks         1.2914301872        7.8130212490        7.4929000181
  Haa        0.5118915302        8.7619959150        6.6098826442

I first read a whole line with the getline function, now I want to split each line, store the front characters in vector<string> ele, and store the back coordinates in vector<vector<double>> coor, How should it be done?
This is the code I wrote, I don't know how to proceed.

#include<iostream>
#include<fstream>
#include<string>
#include<cmath>
#include<vector>

void readCoor(int num, std::vector<std::string>& ele, std::vector<std::vector<double>>& coor);

int main()
{
  int num=192;
  std::vector<std::string> ele;
  std::vector<std::vector<double>> coor;

  readCoor(num, ele, coor);

return 0;

}

void readCoor(int num, std::vector<std::string>& ele, std::vector<std::vector<double>>& coor)
{

  std::string hang;

  std::ifstream coor_in("guiji.xyz", std::ios :: in);

  getline(coor_in, hang);
  getline(coor_in, hang);

  for (int i=0;i<num;i++)
  {
  getline(coor_in, hang);
  }

return;
}
Zhao Dazhuang
  • 127
  • 5
  • You probably want to use something similar to method #2 of this answer: [https://stackoverflow.com/a/7868998/487892](https://stackoverflow.com/a/7868998/487892) – drescherjm Aug 02 '22 at 02:47
  • Can't you use an `std::iftream` for this? It acts likes std::cin, but on files. If you *need* to read each line with `std::getline`, one option is to use `std::istringstream` with the `std::string` you're putting your line in. – Roozbeh Sayadi Aug 05 '22 at 09:52

0 Answers0