Info2-Aufgaben/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)
{
    unsigned int wordCount = 0;
    unsigned int charIndex = 0;
    int c;

    if (file == NULL) {
        return 0;
    }

    while ((c = fgetc(file)) != EOF) {

        if (c == ',' || c == ';' || c == ' ' ||
            c == '\n' || c == '\t' || c == '\r') {

            if (charIndex > 0) {
                words[wordCount][charIndex] = '\0';

                wordCount++;
                charIndex = 0;

                if (wordCount >= maxWordCount) {
                    return (int)wordCount;
                }
            }
            }
        else {
            if (wordCount < maxWordCount &&
                charIndex < MAX_WORD_LEN - 1) {

                words[wordCount][charIndex] = (char)c;
                charIndex++;
                }
        }
    }

    if (charIndex > 0 && wordCount < maxWordCount) {
        words[wordCount][charIndex] = '\0';
        wordCount++;
    }

    return (int)wordCount;
}