How to put each word of a string into an array

[nagabathula]

Hello every one i am stuck at a small problem. I have a text file with some data which i am reading from my Qt program. I put the read text string into a QString container. I am trying to split the string after every blank space and want to put it in a array
and access any particular data position with its index number.

QFile file("C:/thermaldata.txt");
  QString line;
  if ( file.open(IO_ReadOnly | IO_Translate)) 
  {       
    QTextStream t( &file );        
    QTextStream stream( &file ); 
    line.append(stream.readLine());
    file.close();
  }
      QStringList list;
     list = line.split(" "); // trying to split the string after every blank space
}

QFile file("C:/thermaldata.txt");
  QString line;
  if ( file.open(IO_ReadOnly | IO_Translate)) 
  {       
    QTextStream t( &file );        
    QTextStream stream( &file ); 
    line.append(stream.readLine());
    file.close();
  }
      QStringList list;
     list = line.split(" "); // trying to split the string after every blank space
}

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I wanted to put each word in the text string in an array something like
list.at(0) should have 5/3/2011
list.at(1) should have 11:47:24
so that i can access any word according to their position.

This is the text string i read from the text file.

("5/3/2011 11:47:24 AM	1.33E+3	853	1.33E+3 868 P235.529	235.864	27.014	26.505	27.108	26.695	26.806	26.602	26.852	236.065	30.987	27.160	27.969	27.222	26.199	30.690	33.263	26.576	26.518	236.360	236.626	26.590")

("5/3/2011 11:47:24 AM	1.33E+3	853	1.33E+3 868 P235.529	235.864	27.014	26.505	27.108	26.695	26.806	26.602	26.852	236.065	30.987	27.160	27.969	27.222	26.199	30.690	33.263	26.576	26.518	236.360	236.626	26.590")

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how should i go about doing this.. ?? i tried a few things but couldn't get what i wanted.

Thank you

[MarekR22]

You have a QTextStream so use operator >>:

QFile file("C:/thermaldata.txt");
QString item;
if ( file.open(IO_ReadOnly | IO_Translate)) {       
    QTextStream t( &file );
 
    while(t.atEnd()) {
         t >> item;
         porcess(item);
    }
}

QFile file("C:/thermaldata.txt");
QString item;
if ( file.open(IO_ReadOnly | IO_Translate)) {       
    QTextStream t( &file );

    while(t.atEnd()) {
         t >> item;
         porcess(item);
    }
}

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see http://doc.qt.nokia.com/latest/qtext...erator-gt-gt-4

[Zlatomir]

And this line list = line.split(" "); doesn't work? Be more specific about what happens, else we can't really help you.

[MarekR22]

He has not only spaces there (probably horizontal tab too).
PS. you can also use regular expretion (not only spaces will be treated as separators):

line.split(QRegExp("\\s+"));

line.split(QRegExp("\\s+"));

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[nagabathula]

Hello MarekR thanks for the reply.. i have been trying to implement what you suggested. But not getting it right i read the detailed description but couldn't figure out how i should use this to put each word of the sentence in a array one after another. This is my first time using QTextStream

QTextStream & QTextStream::operator>> ( QString & str )

QTextStream & QTextStream::operator>> ( QString & str )

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QFile file("C:/thermaldata.txt");
QString item;
if ( file.open(IO_ReadOnly | IO_Translate)) {       
    QTextStream t( &file );
 
    while(t.atEnd()) {
         t >> item;
//porcess(item);
    }
qDebug()<<item; 
}

QFile file("C:/thermaldata.txt");
QString item;
if ( file.open(IO_ReadOnly | IO_Translate)) {       
    QTextStream t( &file );

    while(t.atEnd()) {
         t >> item;
//porcess(item);
    }
qDebug()<<item; 
}

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i checked in qDebug()<<item; but the string is not present in the item container. not able to figure out how i should use this

QTextStream:perator>> ( QString & str )

it looks perfect for my program, it separates each word by the space and put it in the a string i could access each word by using its position but it is not showing the text string at all. ?

thank you

[SixDegrees]

QString.split() does exactly what you want. Why is the result of using it not acceptable?

[nagabathula]

hi i tried QString.split() but when i try to access a word from the text string which is in the QString line. for example i try to access the third word line.at(3) i see a / instead of the third word which is 1.33E+3 it is taking the 3rd character from the string. where in i wanted to access the third word.

"5/3/2011 11:47:24 AM	1.33E+3	853	1.33E+3 868 P235.529	235.864	27.014	26.505	27.108	26.695	26.806	26.602	26.852	236.065	30.987	27.160	27.969	27.222	26.199	30.690	33.263	26.576	26.518	236.360	236.626	26.590"

"5/3/2011 11:47:24 AM	1.33E+3	853	1.33E+3 868 P235.529	235.864	27.014	26.505	27.108	26.695	26.806	26.602	26.852	236.065	30.987	27.160	27.969	27.222	26.199	30.690	33.263	26.576	26.518	236.360	236.626	26.590"

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thank you

[nagabathula]

Hi SixDegrees that made me look back into qt assistant and the example was there i had to put the split string into a StringList which i was not doing. I can access any word with the index position.. Thanks everyone for helping me out. ..

Regards

---

Added after 14 minutes:

Hello i have another doubt off this topic.. wanted to know how i can create a .dat file from my program. Do i have to jus specify the extension .dat to the file to create , right now i am creating a txt file with some data in it. i wanted the same to be in .dat format.

Thank you

[ChrisW67]

You can call your file whatever your operating system will allow and write anything you like into it. Want to write a file called "something.dat" filled with English text, Swahili text, or binary image data, go right ahead. ".dat" is not a description of a file format, it is part of a file name.