Save first word a file in c - c

Question

I have a problem with this part of my code, I'm trying to read the lines of a file and cut only the first word of each line and then save it in an array.
Example:
two roads diverged in a yellow wood
and sorry i could not travel both
and be one traveler long i stood
and looked down one as far as i could
to where it bent in the undergrowth
and as a result I expect a vector like this: "two, and, and, and, to"
but I get this: "to, to, to, to, to".
My code
dictionary *load_word(int autor, dictionary *D_first)
{
FILE *date;
char line[LONG_MAX_LINE];
char exeption[4] = " \n\t";
char *word;
int j=0;
if (autor == 1)
{
if ((date = fopen("test.txt", "r")) == NULL)
{
perror("robert_frost.txt");
}
while (fgets(line, LONG_MAX_LINE, date ) != NULL)
{
word = strtok(line, exeption); /*first word*/
add_dictionary_first(D_first, j, word);
j++;
}
fclose(date);
}
return D_first;
}
void add_dictionary_first(dictionary *D, int cont, const char *value)
{
expand_dictionary(&D, 1);
D->Distribution[D->size-1]->cont = cont;
D->Distribution[D->size-1]->value = value;
}

Answer 1

The problem lies within this line (as Vlad from Moscow posted in the comments):
D->Distribution[D->size-1]->value = value;
This is just pointer assignment. That's not wrong per se, but depending on the
context, it is not what you want.
while (fgets(line, LONG_MAX_LINE, date ) != NULL)
{
word = strtok(line, exeption); /*first word*/
add_dictionary_first(D_first, j, word);
...
}
Here you call add_dictionary_first always with the same variable line. It is
an array but arrays decay into pointers when passing them as arguments to
functions. That means that all your D->Distribution[D->size-1]->value point to
the same location. The last line in your input file begins with to and that's why you get only
to.
You need to copy the string with strcpy.
man strcpy
#include <string.h>
char *strcpy(char *dest, const char *src);
The strcpy() function copies the string pointed to by src, including the terminating
null byte ('\0'), to the buffer pointed to by
dest. The strings may not overlap, and the destination string dest must be
large enough to receive the copy.
Because you haven't posted the structure I can only guess that value is
declared as char* (if it were char[] the compiler would have complained).
Option 1
D->Distribution[D->size-1]->value = malloc(strlen(value) + 1); // note the +1 here
if(D->Distribution[D->size-1]->value == NULL)
{
// error handling
}
strcpy(D->Distribution[D->size-1]->value, value);
Option 2
If strdup is available in your system
D->Distribution[D->size-1]->value = strdup(value);
if(D->Distribution[D->size-1]->value == NULL)
{
// error handling
}
In either case you would have to free the memory later.