I have a bit of code and I need to split the words in the filename and store them separately.

Example:

Input -> filename ( e.g. /Users/user/Documents/uni)

Storage in variable/array as separate words ( not sure how):

char array/struct array = Users user Documents uni

How can I achieve the above example of storing words with C?

Here is my code:

int main(int argc, char *argv[])
{
 char filename[255];
 for (int i = 0; i < argc; i  )
 {
    strcpy(&filename[i], argv[i]);
 }
}

Thanks in advance

CodePudding user response：

Would you please try the following:

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

int main(int argc, char *argv[])
{
    char filename[BUFSIZ];              // pathname
    int i;
    int n = 0;                          // number of words
    char **ary = NULL;                  // array of strings
    char *tok;                          // pointer to each token

    if (argc != 2) {                    // verify aruguments
        fprintf(stderr, "usage: %s pathname\n", argv[0]);
        exit(1);
    }
    strncpy(filename, argv[1], BUFSIZ);
    for (tok = strtok(filename, "/"); tok != NULL; tok = strtok(NULL, "/")) {
        if (NULL == (ary = realloc(ary, (n   1) * sizeof(*ary)))) {
                                        // enlarge array of strings
            perror("realloc");
            exit(1);
        }
        if (NULL == (ary[n] = malloc(strlen(tok)   1))) {
                                        // allocate memory for the word
            perror("malloc");
            exit(1);
        }
        strncpy(ary[n], tok, strlen(tok)   1);
                                        // copy the token to the array
        n  ;
    }

    // see the results
    for (i = 0; i < n; i  ) {
        printf("[%d] %s\n", i, ary[i]);
    }

    // free the allocated memory
    for (i = 0; i < n; i  ) {
        free(ary[i]);
    }
    free(ary);

    return 0;
}

If you compile the code to the executable a.out, the outout will look like:

$ ./a.out /Users/user/Documents/uni
[0] Users
[1] user
[2] Documents
[3] uni

CodePudding user response：

I have managed to achieve the desired outcome with this piece of code:

int main(int argc, char *argv[])
{
 char word[255];
 const char s[2] = "/";
 char *token;
   if( argc == 2 ) {
      printf("The argument supplied is %s\n", argv[1]);
   }
   else if( argc > 2 ) {
      printf("Too many arguments supplied.\n");
   }
 strcpy(word, argv[0]);
 token = strtok(word, s);
    while( token != NULL ) {
      printf( " %s\n", token );
      token = strtok(NULL, s);
    }
}