Learning some C syntax here, and I've run into something that I find a bit confusing.
I am trying to make two functions:

1) `char* extractCharacters(char** input)`
Take argv[1] from main and extract the first two characters (they can be any readable ascii characters)make a string out of them. Return that string. 

2) `char* concatenate(char* string1, char* string2)`
Take the string returned from function 1 above, and concatenate it with a second input string supplied by main. 

For this one, I have:

```
char* concatenate(char* string1, char* string2)
{
char* concatenated = malloc(strlen(string1)+strlen(string2)+1);
strcpy(concatenated, string1);
strcat(concatenated, string2}
return concatenated
}

```

When it comes to function 1, I understand `argv` is a the pointer of a pointer, I just dont really get how to go from that to a string at runtime. Sorry if the question is a bit noobish.

Thanks!