CODEWITHSUNDEEP
c++parsingfile-iostreamgetline
roundtheworld
roundtheworld

Reputation: 2795

Issue reading space from file

I am trying to read a line from a file that has spaces in it. Despite everything I've tried and all my research, nothing seems to work, here is my current attemp

void read_name(fstream& in_file, comp& cmp)
{
   char buff[80];
   in_file.getline(buff, 79, '\n');
   in_file >> buff;

   cout << "NAME: " << buff << endl;

   cmp.set_name(buff);
   in_file.getline(buff, 79);
}

For whatever reason, this will still read until it sees a space and then stops. Any help would be much appreciated. I'm not that great with straight C++ so I could very well just be missing something.

Upvotes: 0

Views: 99

Answers (3)

Rich
Rich

Reputation: 4962

The line 

in_file >> buff;

is wiping out the contents of buff which you've just read from the file. If you step through your code with a debugger watching the contents of buff then you would see this happening.

Upvotes: 1

Benjamin Lindley
Benjamin Lindley

Reputation: 103703

in_file.getline(buff, 79, '\n');

There. You read a line (assuming the line wasn't longer than 78 characters). So why'd you go and do this?

in_file >> buff;

That's going to overwrite the line you just read with the next word. If you want the next line, then call getline again.

But it's better to use std::string and the free function std::getline, that way you don't have to specify line lengths.

std::string buff;
std::getline(in_file, buff);

Upvotes: 1

DiegoNolan
DiegoNolan

Reputation: 3766

Since you are using c++ I recommend you use stl string instead of char arrays.

std::string linestr;
while( std::getline(input, linestr) )
{
   // process line
}

where input is your ifstream.

Upvotes: 0

Related Questions