How To Add Char Arrays In C

03-16-2019

Lamentable the title sounds like a natural language twister. If I have an array of arrays similar so:

Code:

                          char *specials[24] = {         "and", "or", "not", "equal", "plus", "minus",         "times", "slash", "dollar", "percent", "at",         "nothing", "one", "ii", "three", "four", "five",         "six", "seven", "eight", "nine", "to", "for", "ate"     };

Whats the proper way to suspend another discussion/char array to specials? Hopefully this hasn't been asked a lot. A search of "append char array to array of char arrays" brings up a lot of stuff that isn't necessarily related to my question.

Edit:

I added a function similar this:

Code:

void append_word(char **wordarray, int length) {     wordarray[0] = "new_word"; }

This works and inserts new text. I tried using the length to effort wordarray[length+1] = "new_word"; but that gives me an error unfortunately.

Whatever aid would exist profoundly appreciated. Thank y'all.

03-xvi-2019

The normal way would exist to create "specials" using malloc()

You would so resize your original retentivity allocation using realloc()

03-17-2019

Since specials is an array of string literals, you should have declared information technology as:

Code:

const char *specials[] = {     "and", "or", "not", "equal", "plus", "minus",     "times", "slash", "dollar", "percent", "at",     "zero", "one", "two", "three", "four", "five",     "six", "seven", "eight", "ix", "to", "for", "ate" };

Of course, if you do this the assortment is of fixed size, and moreover the number of elements in use is equal to the size, then you lot cannot cannot add any more elements in employ. If you can conceptualize a reasonable maximum number of elements though, you could then write:

Code:

const char *specials[100] = {     "and", "or", "not", "equal", "plus", "minus",     "times", "slash", "dollar", "per centum", "at",     "nix", "one", "two", "three", "four", "5",     "six", "seven", "8", "ix", "to", "for", "ate" };  int append_word(const char **words, size_t size, const char *word) {     size_t i = 0;     while (i < size && words[i])     {         ++i;     }      if (i < size)     {         words[i] = word;         return ane;     }     else     {         return 0;     } }

Now you can write:

Code:

if (append_word(specials, 100, "new_word")) {     // etc } else {     // report/log fault concerning the specials assortment being full }

Alternatively, y'all could use Click_here's suggestion of malloc (and realloc), in which case specials would be a const char** instead of an array. Call back to gratuitous what you malloc.