Thread: Parsing pipe-delimited linesfrom a text file

After loading this text file:

Code:

Apex City Hotel|4|61 Grassmarket|Edinburgh|EH1 
Hilton Edinburgh Airport|4|Edinburgh International Airport|Edinburgh|EH12 
Novotel Edinburgh Centre|4|80 Lauriston Place|Edinburgh|EH3 
Premier Inn Haymarket|3|1 Morrison Link|Edinburgh|EH3 
Premier Inn Lauriston Place|3|82 Lauriston Place|Edinburgh|EH3 
Premier Inn Leith|3|51-53 Newhaven Place - Leith|Edinburgh|EH6 
Sheraton Grand Hotel & Spa|5|1 Festival Square|Edinburgh|EH3 
The Caledonian|5|Princess Street|Edinburgh|EH1 
The Glasshouse|5|2 Greenside Place|Edinburgh|EH1 
The Hilton Edinburgh Grosvenor|4|Grosvenor Street|Haymarket|Edinburgh|EH12

I'm trying to store the individual pieces of info in separate arrays.
The while loop that uses sscanf() doesn't seem to work right. Nothing is displayed and the while loop itself doesn't seem to even execute. What am I doing wrong? I've been googling and messing with this for hours..

Code:

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define NUM_OF_CHARACTERS 256

int main(void)
{
    char inputArray[NUM_OF_CHARACTERS];
    char *ptr;
    FILE *fp = fopen("OpenChampionshipHotels.txt", "r");
    fgets(inputArray, NUM_OF_CHARACTERS, fp);
    printf("%s", inputArray);
    ptr = strtok(inputArray, "|");

    while(ptr != NULL)
    {
        printf("%s\n", ptr);
        ptr = strtok(NULL, "|");
    }

    int lineCount = 1;
    char separators[] = "|";

    if (fp == NULL)
    {
        printf("Error Reading File\n");
        exit(1);
    }

    //find out how many lines are in the file.
    while(fgets(inputArray, sizeof(inputArray), fp) != NULL)
    {lineCount++;}
    

    // create arrays to store information
    char hotelName[lineCount][NUM_OF_CHARACTERS];
    char hotelRating[lineCount][NUM_OF_CHARACTERS];
    char hotelStreetAddress[lineCount][NUM_OF_CHARACTERS];
    char hotelCity[lineCount][NUM_OF_CHARACTERS];
    char hotelPostalCode[lineCount][NUM_OF_CHARACTERS];

    // copy lines from text file to array
    int currentLine = 0;
    while(fgets(inputArray, sizeof(inputArray), fp) != NULL && currentLine < lineCount)
    {
        printf("%s %s\n", currentLine, lineCount);
        sscanf(inputArray, "%[^|]|%[^|]|%[^|]|%[^|]|%s",
               hotelName[currentLine],
               hotelRating[currentLine],
               hotelStreetAddress[currentLine],
               hotelCity[currentLine],
               hotelPostalCode[currentLine] );

        printf("%s\n", hotelName[currentLine]);
        printf("%s\n", hotelRating[currentLine]);
        printf("%s\n", hotelStreetAddress[currentLine]);
        printf("%s\n", hotelCity[currentLine]);
        printf("%s\n", hotelPostalCode[currentLine]);

        currentLine++;
    }
    fclose(fp);

    return 0;
}

The main problem is your file pointer is pointing to the end of the file when you get to sscanf part. Read up on fseek().

Originally Posted by vart

Code:

printf("%s %s\n", currentLine, lineCount);

printing integer var with %s format will have unpredictable results...

oh, yea. that was just a temporary debugging line. should of been %i. I know.

A quick google returns:
Hilton Edinburgh Grosvenor hotel. Grosvenor Street Haymarket, Edinburgh EH12 5EF, United Kingdom

And you should init your line count to 0

Code:

 int lineCount = 0;