Thread: Reading a LINE from a file

use getline()

for character arrays:std::cin.getline(char*,size,delim)
for Strings:getline(std::cin,string,delim)

examples:

Code:

char linech[20];
std::string linestr;

std::cin.getline(linech,20,'\n');
getline(std::cin,linestr,'\n');

Wow, I think this will be the first time I found something useful from MSDN that actually deals with standard code

http://msdn.microsoft.com/library/de...estlsample.asp

and here is the code sample, this uses the C++ standard String class by the way.

Code:

#include <string>
#include <iostream>

using namespace std ;

int main()
{
   string s1;
   cout << "Enter a sentence (use <space> as the delimiter): ";
   getline(cin,s1, ' ');
   cout << "You entered: " << s1 << endl;
}

basically, if you get rid of the third parameter (the ' ') then it will continue until it reaches a newline by default. such as the example below

Code:

#include <string>
#include <iostream>

using namespace std ;

int main()
{
   string s1;
   cout << "Enter a sentence: ";
   getline(cin,s1);
   cout << "You entered: " << s1 << endl;
}

EDIT: Darn, beaten to it.

the getline example I used is usable with filestreams as well, just replace cin with the filestream

EDIT
Ok, I threw together a little demo of what I mean

Code:

#include <fstream>
#include <iostream>
#include <string>
using namespace std;

int main()
{
        string InputBuffer;
        fstream InputFile;
        InputFile.open("testfile.txt", fstream::in);
        while(!InputFile.eof())
        {
                getline(InputFile,InputBuffer);
                cout << "Got one line: " << InputBuffer << endl;
        }
        InputFile.close();
        cout << endl << "All lines read and printed" << endl;
}

Yes, I know, the filename is hardcoded, but it worked to test with