Reading a tab character

[trent101]

Hey,

I am creating a simple win32 consol program using vc++.net.

My job is to read in data from two tab-delimeted files, one is a text file and the other has no extension so I am assuming is binary?

I would like to know how to find out when I read in the tab delimerter, so I know when a field is finished.

I can read id data using:

myfile >> field1 >> field 2 >> feild3; ...etc.

However this reads in each word and counts spaces as a new word.

How can I tell when I have reached the tab character, so I know that the data before it is a field?


Thanks for your time

 

[xwb]

It is far easier if you use C I/O instead of C++ I/O.

1) fgets the whole line
2) examine the line for tab characters (\t or \011 or \x09)
3) alternatively break it up using strtok

It may be old fashioned and not be the latest technology but it is simple and it will work.

 

[cpjust]

What about something like this:

#include <iostream>
#include <iterator>
#include <fstream>
#include <string>
#include <vector>

using namespace std;

struct Record
{
	string	name;
	string	address;
	string	phone;
};

int main()
{
	ifstream inFile( "c:/temp/filename.txt" );

	if ( !inFile )
	{
		cout << "Error opening file!";
		return 1;
	}

	vector<string> lines;
	string line;

	// Read each line into a vector.
	while ( getline( inFile, line ) )
	{
		lines.push_back( line );
	}

	vector<Record> records;
	string field;

	// Parse each line and put the fields into a vector of records.
	for ( vector<string>::iterator it = lines.begin(); it != lines.end(); ++it )
	{
		Record record;
		size_t start = 0;
		size_t end   = it->find( "\t" );

		record.name = it->substr( start, end );
		start = end + 1;

		end = it->find( "\t", start );
		record.address = it->substr( start, (end - start) );
		start = end + 1;

		record.phone = it->substr( start );
		records.push_back( record );
	}

	for ( vector<Record>::iterator it = records.begin(); it != records.end(); ++it )
	{
		cout << it->name    << endl
			 << it->address << endl
			 << it->phone   << endl
			 << "--------------------------------------" << endl;
	}

	return 0;
}