info2Praktikum-Wortsalat/Startcode/input.c

#include "input.h"
#include <string.h>
#include <ctype.h>

// TODO:
// eine Funktion implementieren, die ein einzelnes Wort aus einer Textdatei (words.txt) einliest und als C-String zurückgibt.

// Read words from file and store in 'words' array
int readWords(FILE *file, char words[][MAX_WORD_LEN], unsigned int maxWordCount)
{
    if (file == NULL || words == NULL || maxWordCount == 0) {
        return 0;
    }

    unsigned int count = 0;
    size_t length = 0;
    int tooLong = 0;
    int ch;
    
    while (count < maxWordCount && (ch = fgetc(file)) != EOF) {

        if (ch == ',' || ch == ';' || isspace((unsigned char)ch)) {

            if (length > 0 && !tooLong) {
                words[count][length] = '\0';
                count++;
            }

            length = 0;
            tooLong = 0;
        }
        else if (!tooLong) {

            if (length < MAX_WORD_LEN - 1) {
                words[count][length] =
                    (char)toupper((unsigned char)ch);
                length++;
            }
            else {
                tooLong = 1;
                length = 0;
            }
        }
    }

    if (count < maxWordCount && length > 0 && !tooLong) {
        words[count][length] = '\0';
        count++;
    }

    return (int)count;
    
}