Question

I would like to copy lines from stdin to an array of character pointers. For example if the user entered the following ‘the\nquick\nbrown\nfox’ then I would like to have an array that looks like

arr[0] = ‘the’ arr[1] = ‘quick’ arr[2] = ‘brown’ arr[3] = ‘fox’

Any pointers?

Answer 1

You would need to make sure you have allocated not only an array of pointers, but also allocated space for each of your elements. I am not checking for NULL pointers like you should be, but this should get you started.

char **arr; int maxWords = 3; int i;  arr = malloc (sizeof (char *) * maxWords);  for (i = 0; i < maxWords; i++) {     arr[i] = malloc (100);     fgets (arr[i], 99, stdin); } 

afterwards, you’ll need to free that memory too:

for (i = 0; i < maxWords; i++) {     free (arr[i]) } free (arr);