reading a string in a file and remove white space

[desp_to_learn]

i am new here and i am learning programming now.I am trying to write a program usin c++ on linux machine.The program reads the file "originfile"which has tab separated data, then it removes extra white space(tab in this case) and output the data to file "editedfile" .The program looks like this

#include <iostream>
#include <iomanip>
#include <fstream>
#include <cstdlib>

using namespace std;
void check_blank(ifstream& instream, ofstream& outstream)

int main()
{
ifstream instream;
ofstream outstream;
bool t;
string num;

instream.open("originfile.txt"); //Open file: text to be edited
if(!instream) //Make sure file opened successfully
{
cerr << "Error:File couldnt open1st";
exit(1);
}
outstream.open("editedfile.txt"); //Open file: edited text will go
if(!outstream.fail()) //Check if open failed
{
t = true;
check_blank(instream, outstream); //Call function to input edited text into file
}
else
{
cerr << "File failed to open (2nd)\n";
exit(1);
}
instream.close(); //Close both files
outstream.close();

return 0;
} //End main

void check_blank(ifstream& instream, ofstream& outstream)
{

string word;
//Variable tells if there are multiple blank spaces

while(instream >> word) //While the file isn't at the end
{
outstream << word << " " << endl;
}
}
*******************************************

The originfile looks like this(separated by tab space)

input1 output1
input2 output2
input3 output3

and editedfile i get after compiling the program looks like
input1 output1 input2 output2 input3 output3

My problem is i would like the editedfile to look like this(separated only by one space)
input1 output1
input2 output2
input3 output3

Can anybody please tell me how i can fix this. thank you

[deepinlife]

well i donno much about that problem but i think u must make 2 loops
the upper one is to read all the lines ,
while( file.eof() )
{
read line into strings;
}

the inner loop is to iterate on the string of the whole line and parse word by word
to do this u can use stringstream or make manual thing..

that is a method , but u can use another one not using the operatr ">>"
since this operator absorb the white space and the end of line

[digvijay.gahlot]

Make change like this

void check_blank(ifstream& instream, ofstream& outstream)
{
char word;
//Variable tells if there are multiple blank spaces

while(instream >> ch) //While the file isn't at the end
{
if(ch =='\t')
outstream << ' ';
else
outstream <<ch;
}
}
might work

[desp_to_learn]

thanks for your replies....were very helpful and now the problem is solved....till then.