c++ - Error with reading file in Linux -

in program, take 2 file names command line arguments using following code:

ifstream routesfile (arv[1]); ifstream citiesfile (arv[2]); 

i proceed read through file , grab data. both files csvs:

while(citiesfile.good()){         string city;         string country;         string xstring;         string ystring;         getline(citiesfile, country, ',');         getline(citiesfile, city, ',');         getline(citiesfile, xstring, ',');         getline(citiesfile, ystring); ... } 

when in visual studio using hard-coded file names, works fine. when use command line argument in linux after using g++, can open files correctly after has lot of errors. test file reading, printed out of read values resulted in

terminate called after throwing instance of 'std::out_of_range'   what():  map::at hereelf Òœc½Å¹jn!ýô (eÕl˜c 

the appearance of here due being printed in program. doesn't arise error, manually printed test code.

it seems not able read data correctly. in file citiesfile, there 4 values per line, each separated single command, no spaces, , new line character separates lines in file. said above, works fine in visual studio don't think it's problem actual data, reading it.

linux , window has different new line symbol. linux '\n', windows '\r\n'. if copied file linux, need handle these in program. can @ mixing cin , getline under linux , windows reference.