I need to read the nth line of a text file (e.g. textfile.findline(0)
would find the first line of the text file loaded with ifstream textfile
). Is this possible?
I don't need to put the contents of the file in an array/vector, I need to just assign a specific line of the text file to a varible (specifically a int).
P.S. I am looking for the simplest solution that would not require me to use any big external library (e.g. Boost) Thanks in advance.
How about this?
std::string ReadNthLine(const std::string& filename, int N)
{
std::ifstream in(filename.c_str());
std::string s;
//for performance
s.reserve(some_reasonable_max_line_length);
//skip N lines
for(int i = 0; i < N; ++i)
std::getline(in, s);
std::getline(in,s);
return s;
}