Question

Assignment in C programming class:

read the text file line by line, and place each word, in order, in an array of char strings. As you copy each word into the array, you will keep a running count of the number of words in the text file and convert the letters of each word to lower case. Assume tgat you will use no more than 1000 words in the text, and no more than the first 10 characters in a word. However, there is no guarantee that the text will have 1000 words or less and any word in the text is 10 characters or less

Answer 1

/*
Assignment in C programming class:
read the text file line by line, and place each word, in order, in an array of char strings. 
As you copy each word into the array, you will keep a running count of the number of words 
in the text file and convert the letters of each word to lower case. 
Assume that you will use no more than 1000 words in the text, and no more than the first 
10 characters in a word. However, there is no guarantee that the text will have 1000 words 
or less and any word in the text is 10 characters or less
*/
#include <stdio.h>
#include <ctype.h>
#include <string.h>
// usage : textfile is to be read as command line argument
// eg: ./a.out myFile
int main(int argc, char * argv[]) 
{ 
        if (argc < 2) return 1; 
        char * filename = argv[1]; 
        FILE * fp = fopen(filename, "r"); 
        if (fp == NULL) return 1; 
        char word[10];
        int countWords = 0;
        char allWords[1000][10];
    /* assumes no word exceeds length of 1023 */
    while (fscanf(fp, " %1023s", word) > 0) {
        for(int i = 0; word[i] != '\0'; i++)
                word[i] = tolower(word[i]);
        strcpy(allWords[countWords], word);
        countWords++;
        // puts(allWords[countWords-1]);
    }
        return 0; 
}