Question

I am trying to read a poorly formatted text file, and maybe I’m going about this the wrong way, but based on the getline documentation it sounded like it would pull values until the values weren’t a delimiter value (‘ ‘, in my case):

“If the delimiter is found, it is extracted and discarded, i.e. it is
not stored and the next input operation will begin after it. If you
don’t want this character to be extracted, you can use member get
instead.”

But for some reason it returns nothing many times. See lines 604-607, all those commas in my output are returns of getline. Could someone tell me why it is returning blanks 6 times before it comes to the value? The text file only contains one space before the value. Thanks in advance. 🙂

Relevant screenshot: http://j.drhu.me/2011-09-07_1317.png

#include <iostream>
#include <fstream>
#include <string>
void CMuscleModel::LoadOpParams()
{
int i, j;

ifstream param("params.txt", ios::in);
        if (param.is_open())
        {
            stringstream iss, isn;
            string line, word;

            i=0; j=0;
            while (getline(param,line))
            {
                isn.clear();
                isn << line;
                if(i>27){
                    while (getline(isn,word,' ')) {
                        //LGma[i][j]=atof(word.c_str());
                        if(word == "SM"){
                            getline(param,line);
                            cout << line << endl << endl;

                            isn.clear(); isn << line;

                            getline(isn,word,' ');

                            int junk=0;
                            while (atof(word.c_str())==0){
                                junk++;
                                getline(isn,word,' ');
                            }

                            cout << atof(word.c_str()) << ", " << junk << endl;
                        }
                        if(word == "ST"){
                            cout << word << endl;
                        }
                        if(word == "BFL"){
                            cout << word << endl;
                        }
                        if(word == "BFS"){
                            cout << word << endl;
                        }
                        if(word == "MG"){
                            cout << word << endl;
                        }
                        if(word == "LG"){
                            cout << word << endl;
                        }
                        if(word == "RF"){
                            cout << word << endl;
                        }
                        if(word == "VM"){
                            cout << word << endl;
                        }
                        if(word == "VL"){
                            cout << word << endl;
                        }
                        if(word == "VI"){
                            cout << word << endl;
                        }
                        j++;
                    }
                }
                j=0; i++;
                isn.clear();
            }
        }
        param.close();
}

Ah, sorry for not including code.

Answer 1

I think the output text file I was reading from had trailing spaces and they were just being put into the stream so I was really confused about what was going on. I simply used .str(“”) at the end of each line to reset my current stream and things worked out marvelously. Thanks for all the help guys.