Question

I’m having an interesting error upon moving over to g++ compiling on RedHat after using Visual Studio previously.

I have a loop that looks like this:

for(unsigned int i = 0; i < data.size(); i ++){

    for(int j = 0; j < data[i]->size; j++){

        cout << data[i]->columns[j]<< ',';
    }

    cout << endl;

}

where data[i]->columns is string *, and the intent is to separate the output by commas.
Previously, this worked, however, today my output looks something like this:

,ata, two, three, four
,ata2, two, three, four
,ata3, two, three, four

Whereas if I change the code slightly to:
cout << datai[i]->columns[j] << endl;

I get:

data
two
three
four

data2
two
three
four

What could be causing it to overlap these characters with commas? This wasn’t occurring on the visual studio compiler.

Answer 1

It looked like the final entry in each row has a \r and/or \n.

So on four you get "fourBREAK,"

Your endl output seems to confirm this since you’re getting 2 line breaks after four.