Read an unknown number of lines from console in c++

Question

I am using the following loop to read an unknown number of lines from the console, but it is not working. After I have fed the input I keeping pressing enter but the loop does not stop.

vector<string> file;    
string line;
while(getline(cin,line)
    file.push_back(line);

Answer 1

Because getline will evaluate to true even if you push only enter.

You need to compare the read string to the empty string and break if true.

vector<string> file;    
string line;
while(getline(cin,line))
{
    if (line.empty())
       break;
    file.push_back(line);
}

Answer 2

Try:

vector<string> file;    
string line;
while( getline(cin,line))
{
    if( line.empty())
        break;
    file.push_back(line);
}