Advance reading from file

[Rododendron]

Hi! I tried to find an answer, but I couldn't find anything on this. If I need to read from file such line:

2017-10-11,2550.620117,2555.239990,2547.949951,2555.239990,2555.239990,2976090000

and save numbers as: string(date), double, double, double, double, double and long (so each number after comma should be separate variable)

How should I do this?

getline() accepts string only, and every time when I try to save each number separate string reads the whole line anyway and rest values are garbage.

Thank you for any help!

[lastchance]

#include<iostream>
#include<iomanip>
#include<fstream>
#include<sstream>
#include<string>
using namespace std;


int main()
{
   string line;
   string date;
   double d[5];
   char c;
   long long num;                                           // long long

   ifstream in( "data.txt" );
   while( getline( in, line ) )                             // read a line
   {
      stringstream ss( line );                              // set up a stringstream from the whole line
      getline( ss, date, ',' );                             // collect up to the comma as a date string
      for ( int i = 0; i < 5; i++ ) ss >> d[i] >> c;        // stream the doubles out, each followed by a char
      ss >> num;                                            // stream the long long integer out

      // Check data
      cout << "\nDate: " << date;
      cout << "\nDoubles: ";
      for ( int i = 0; i < 5; i++ ) cout << fixed << setprecision( 6 ) << d[i] << " ";
      cout << "\nLong long: " << num << "\n\n";
   }
   in.close();
}

You probably want to store the data from each line in a suitable struct, and the whole collection of these as a vector of those structs, but since I don't know what the numbers represent I'll just leave them as that.

data.txt:

2017-10-11,2550.620117,2555.239990,2547.949951,2555.239990,2555.239990,2976090000
2016-09-10,3661.731228,3666.340001,3658.050062,3666.349001,3666.340001,3087101111
2015-08-09,4772.842339,4777.451112,4769.161173,4777.450112,4777.451112,4198212222

Date: 2017-10-11
Doubles: 2550.620117 2555.239990 2547.949951 2555.239990 2555.239990 
Long long: 2976090000


Date: 2016-09-10
Doubles: 3661.731228 3666.340001 3658.050062 3666.349001 3666.340001 
Long long: 3087101111


Date: 2015-08-09
Doubles: 4772.842339 4777.451112 4769.161173 4777.450112 4777.451112 
Long long: 4198212222

[Thomas1965]

There are some options. Choose one that seems easiest for you.

First option: read the whole line with getline, than replace all ',' with ' ' or '\t', create a stringstream with this line and use >> to read the values.

Second option: use getline to read date with separator ',' then read double with >> which terminates at ',' since you use '.' as decimal point then read the separator ',' and so on for all numerical values.

Hope this makes sense.

[Rododendron]

OOOOOOO, thank you for help so much :D problem is solved

And yeah I want to store each line in object called "line", but i will handle this