CODEWITHSUNDEEP
c++ifstreamc++20coutgetline
Sam F
Sam F

Reputation: 31

cout not printing string of vector after getline

I have a .csv file with following contents:

1.0,2.0
2.0,3.0

Now i want to read this file and print it to the terminal. I want the output look like this:

1.0|2.0|
2.0|3.0|

But all i get is:

|
|

When i run the debugger the vector contains the correct data but it just wont print it.

Vector array while cout (debugger):

array = {std::vector<std::vector>}
   [0] = {std::vector<std::basic_string, std::allocator>}
      [0] = {std::basic_string<char, std::char_traits, std::allocator>} "1.0"
      [1] = {std::basic_string<char, std::char_traits, std::allocator>} "2.0\r"
   [1] = {std::vector<std::basic_string, std::allocator>}
      [0] = {std::basic_string<char, std::char_traits, std::allocator>} "2.0"
      [1] = {std::basic_string<char, std::char_traits, std::allocator>} "3.0\r"

My code:

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

int main()
{
    using namespace std;

    ifstream in("C:\\Users\\freit\\CLionProjects\\Aufgabe2\\data.csv", ios_base::in);

    string line, field;

    vector< vector<string> > array;  // the 2D array
    vector<string> v;                // array of values for one line only

    while ( getline(in,line) )    // get next line in file
    {
        v.clear();
        stringstream ss(line);

        while (getline(ss,field,','))  // break line into comma delimited fields
        {
            v.push_back(field);  // add each field to the 1D array
        }

        array.push_back(v);  // add the 1D array to the 2D array
    }

    // print out what was read in

    for (size_t i=0; i<array.size(); ++i)
    {
        for (size_t j=0; j<array[i].size(); ++j)
        {
            cout.flush();
            cout << array[i][j] << "|"; // (separate fields by |)
        }
        cout << "\n";
    }

    return 0;
}

Upvotes: 1

Views: 90

Answers (1)

Sam F
Sam F

Reputation: 31

The problem is within the data.cls i wanted to read. The debugger shows an \r (escape sequence) at the end of every line. This might have appeared after opening data.cls with Excel and the autosave ticked. Problem was solved after writing a new data.cls with standard windows texteditor. Got the solution thanks to comments!

Upvotes: 2

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