Flatten array into string

Question

I have an array that is a "NULL-terminated array of NULL-terminated strings". This is given by char **args.

I can access individual elements using args[0], args[1], etc. I wanted to take the entire array and flatten all the elements into a string. If the array contained:

args[0] = "abc"
args[1] = "def"

I want a resulting string to be:

abcdef

I tried to do this by looping through all the elements and concatenating them all together but I do not know how to tell when I have reached the end of the array because sizeof() does not work.

Answer 1

I have an array that is a "NULL-terminated array of NULL-terminated strings".

The array ends with NULL, that is as soon as args[i] == NULL you stop your iteration.