Does anyone know why is my code not reading file from first line

Question

I want to create program for delaying subtitles and when I run this code below is not reading from first line. It strat like of middle of file.

#include "stdafx.h"
#include "iostream"
#include "cstdlib"
#include "fstream"
#include "string"

using namespace std;

int main(int argc, char *argv[]){
     ifstream input; //input

     char input_file[32]; //names of input and output


      cout << "Enter name of input fille: "; ///user gives names of input
      cin >> input_file;

input.open(input_file);
if (!input.good()){
    cout << "File " << input_file << " dosen't exist." << endl;
    return 1;
}


string row;
while (!input.eof()){    
    getline(input, row);

    cout << row << endl;
}

system("pause");
return 0;
}

Must Read :[_Why is iostream::eof inside a loop condition considered wrong ?_](http://stackoverflow.com/q/5605125/1870232) — P0W, Jan 18 '14 at 12:16
@barakmanos `std::getline` will read an entire line including white space. `input >> row ` won't, by default — P0W, Jan 18 '14 at 12:20

score 0 · Answer 1 · edited May 23 '17 at 12:29

0

First, eof() should not be placed in a while(), see here for details. So change

while (!input.eof()){    
    getline(input, row);
    cout << row << endl;
}

to

while (getline(input, row)){       
    cout << row << endl;
}

and see how it goes. It's really weird reading from the middle of the file. Maybe you can further share the content of the file to us to better fix the problem.

edited May 23 '17 at 12:29

Community

1
1

answered Jan 18 '14 at 12:28

herohuyongtao

49,413
29
133
174

score 0 · Answer 2 · answered Jan 18 '14 at 16:01

0

You still can set the position to the beginning manually with input.seekg(0, input.beg) before reading anything.

answered Jan 18 '14 at 16:01

Lucas8

11
1

Does anyone know why is my code not reading file from first line

2 Answers2