[Webinar] Streamline your web hosting managementRegister Today

x
  • Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 287
  • Last Modified:

files

Hi

I am reading from a file and would like to store only the last word of each line in an array.

for example:

This is line one\n
This is line two\n

I would like to store the word one and then the word two, disregarding the other words.

Can anyone offer any help, Im using c?

Cheers
0
codey-06
Asked:
codey-06
1 Solution
 
woolmilkporcCommented:
A pure bash/awk solution:

myarray=( $(awk '{print $NF}' inputfile) )

To display the new array:

echo ${myarray[*]}
0
 
codey-06Author Commented:
Do you know how I could implement this in a c program file?  I would also like to store one and two in 2 separate char arrays?

Thank you
0
 
sarabandeCommented:
read line by line calling fgets into a char buffer, right-trim the buffer (also strip linefeed character) and then search for space char most right calling strrchr. increment the pointer you got returned from strrchr and make a copy for example by passing it to strdup. you then would add that pointer to an array of char* or to a linked list.

Sara
0
 
OrcbighterCommented:
It is quite easy, using the stream classes,
The following code opens the file for input, then in a read-loop, reads in each line of the file.
For each line it uses the istringstream class to break up the line into each word until the end of line (iss == NULL). for each word, if the value is not null, it saves it to the lastWord variable.
If, after the loop, that variable contains a value, it will be the last word of the line just retrieved.


#include <tchar.h>
#include <iostream>
#include <sstream>
#include <string>
#include <fstream>




int _tmain(int argc, _TCHAR* argv[])
{
    bool bAll_OK = true;
    bool bFileOpen = false;
    string inFilename = L"C:\\Temp\\MyFile.txt";
    fstream infile;

    try
    {
        infile.open( inFilename.c_str(), ios_base::in );
        infile.exceptions(  fstream::eofbit | fstream::failbit | fstream::badbit);

        if ( infile.is_open() )
        {
            bFileOpen = true;
        }
    }
    catch( fstream::failure er )
    {
        Cerr << er.what() << endl;
        bAll_OK = false;
    }

    // file is open, lets read it.
    while ( bAll_OK )
    {
        try
        {
            string tmpBuffer, lastWord;
            istream& ist = infile;

            getline( ist, tmpBuffer );
            istringstream iss( tmpBuffer );
   
            do
            {
                string subStr;
                iss >> subStr;

                if ( subStr.length() > 0 )
                {
                    lastWord.assign( subStr );
                }
            } while ( iss != NULL );

            if ( lastWord.length() > 0 )
            {
                // add code here to store the last word
            }
        }
        catch( fstream::failure er )
        {
            cerr << er.what() << endl;
            bAll_OK = false;
        }
    }

    return 0;
}
0
 
DhaestCommented:
This question has been classified as abandoned and is closed as part of the Cleanup Program. See the recommendation for more details.
0

Featured Post

[Webinar] Improve your customer journey

A positive customer journey is important in attracting and retaining business. To improve this experience, you can use Google Maps APIs to increase checkout conversions, boost user engagement, and optimize order fulfillment. Learn how in this webinar presented by Dito.

Tackle projects and never again get stuck behind a technical roadblock.
Join Now