Question

Nearby is a main() function demonstrating the use of the function earliest_word. Implement this function according to the documentation given. My solution is about 25 lines plus some closing curly braces.

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

char *earliest_word(char *fname, int *nwords);

// Opens the file fname and reads words from it

// until the end of file is reached then closes

// the file. If the file to be opened doesn't

// exist, returns NULL and sets nwords to

// -1. Tracks the alphabetic "earliest" word that

// is read in as indicated by strcmp(). Tracks how

// many words in total are read and sets nwords to

// that value. Allocates a block of memory and

// copies the earliest word found into the block

// using strcpy(). Returns a pointer to the

// freshly allocated block.

//

// ASSUMPTIONS: Words are no longer than 127

// characters so will fit in an array of size

// 128. Files have at least one word in them.

int main(){

int count; char *file; char *early;

file = "vegetables.txt";

// pumpkin carrot beet squash cucumber

early = earliest_word(file, &count);

printf("%s: %d words, %s earliest\n",

   file,count,early);

// vegetables.txt: 5 words, beet earliest

free(early);

file = "fruits.txt";

// banana peach orange apple pineapple strawberry

early = earliest_word(file, &count);

printf("%s: %d words, %s earliest\n",

   file,count,early);

// fruits.txt: 6 words, apple earliest

free(early);

file = "not-there.txt";

early = earliest_word(file, &count);

if(early==NULL){

printf("%s not found\n",file);

// not-there.txt not found

}

return 0;

}

C programming

Answer 1

#include <stdio.h>
#include <stdlib.h>
/**
 * Global variables
 */
FILE *fileToRead;
char ch;
int num_characters, nwords, num_lines;

void earliest_word(char *fname, int nwords) {
    fileToRead = fopen(fname, "r");

    /* Check if the file is opened*/
    if (fileToRead == NULL) {
        printf("Problem occurred will trying to open the file.\nCheck if the file exists or provide the right path\n");
        // set file nwords to negative one
        nwords = -1;
        exit(EXIT_FAILURE);
    }

    /*
     * Logic to count num_characters, nwords and num_lines.
     */
    num_characters = nwords = num_lines = 0;
    while ((ch = fgetc(fileToRead)) != EOF) {
        num_characters++;

        /* new line checker*/
        if (ch == '\n' || ch == '\0')
            num_lines++;

        /* Words checker */
        if (ch == ' ' || ch == '\t' || ch == '\n' || ch == '\0')
            nwords++;
    }

    /* Increment nwords and num_lines for last word */
    if (num_characters > 0) {
        nwords++;
        num_lines++;
    }

    /* Print fileToRead statistics */
    printf("\nTotal num_lines in the file  = %d\n", num_lines);
    printf("Total number of words in the file      = %d\n", nwords);
    printf("Total number of characters in in the file = %d\n", num_characters);

    /* Closing the file after read completion*/
    fclose(fileToRead);
}

// main function
void main() {
    // file to read pointer declaration
    FILE *fileToRead;
    //character array of file filePath to read
    char * filePath[100];
    //file entry
    printf("Please provide the source filePath: ");
    scanf("%s", filePath);

    /* Open the fileToRead in read mode */
    fileToRead = fopen(filePath, "r");
    //operation process
    //External method call
    earliest_word(filePath,nwords);
}
OutPut:

_________________________________

Comment Down For Any Queries.

Please Give a Thumbs Up If You are satisfied With The Answer.