C++ reading file line by line

Question

There is a text file I want to display, but I only get the first line, not sure how to do this:

string line;
ifstream myfile;
myfile.open("myfile.txt");
getline(myfile, line); 
cout << line << endl;

Google "loop control structures in C++". – Bathsheba Mar 17 '15 at 10:49 — Bathsheba, Mar 17 '15 at 10:49

score 16 · Accepted Answer · answered Mar 17 '15 at 10:51

16

    string line;
    ifstream myfile;
    myfile.open("myfile.txt");

   if(!myfile.is_open()) {
      perror("Error open");
      exit(EXIT_FAILURE);
   }
    while(getline(myfile, line)) {
     cout << line << endl;
    }

You just need to add a loop to get all lines of the file

answered Mar 17 '15 at 10:51

alifirat

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Keep getting no such file or directory when it's there. – mLstudent33 Nov 15 '22 at 05:49

score 3 · Answer 2 · edited May 23 '17 at 12:31

3

You are reading line just once with one call of getline(myfile, line); You need to do that in a loop until all lines are read. Same question

edited May 23 '17 at 12:31

Community

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answered Mar 17 '15 at 10:53

riodoro1

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C++ reading file line by line

2 Answers2