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how to read line number in a text file

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grsandeep85

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  • "grsandeep85" is male
  • "grsandeep85" started this thread

Posts: 39

Location: INDIA(Bangalore)

Occupation: Design Engineer

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1

Thursday, July 30th 2009, 10:30am

how to read line number in a text file

Hi All,

have a text file in the format
#n X Y Z
0 123 456 789
1 321 654 987
2 345 243 809
......
.....
...... and so on
i have implemented the code which reads the contents of file and display in the console along with the line numbers, here is my code

QStringList lines;
QString result;
QFile file( "datum.txt" );
if ( file.open( IO_ReadWrite ) ) {
QTextStream stream( &file );
QString line;
linenumber = 0;
while ( !stream.atEnd() ) {
line = stream.readLine( );
printf( "%3d: %s\n", linenumber++, line.latin1() );
lines +=line;
}
file.close();
}

now how read the particular line number in a text file(say line number 3) and its contents.please help us it would be a great pleasure.
Thanks & Regards
Sandeep G R

profox

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Posts: 111

Location: Belgium

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Thursday, July 30th 2009, 3:04pm

I don't understand your question.
You want to read a particular line number from the file in a QString?
I think that's not possible. You have to actually read through the file itself, just like you are doing now.