Basic C Pointer

Question

I'm a beginner in C and have been trying to figure out what has gone wrong with my code code for the past hour or two. I have been following through K&Rs book and I keep looking through it but still do not understand my logic mistake.

while (*argv>0){
    while (**argv>0){
        printf("%c\n",**argv);
        **argv++;
    }
    argv++;
}

Task:Print out all the arguments being fed to my program using argv.

To my understanding, argv is a pointer to an array that contains further pointers to arrays of character pointers. So, I said that while *argv>0 or while the first array still has elements, we should follow the pointers from the first array to the next array. Then we should print out all the elements in the next array.

Answer 1

Too many * in this line:

**argv++;

It should be like this:

*argv++;

Plus additional braces, because the ++ operation has higher priority:

(*argv)++;

And it will work.