main function signature: 
```````````````````````

   int main(int argc, char *argv[])

argument count: 
``````````````
   argc = 2

argument vector (arrays/list of strings): 
````````````````````````````````````````
   argv[0] = "c2"
   argv[1] = "abcde"

   argv[1][0] = 'h'     *argv[1] = 'a'
   argv[1][1] = 'b'
   argv[1][2] = 'c'
   argv[1][3] = 'd'
   argv[1][4] = 'u'


example of a 'correct' password:
```````````````````````````````   
   haaau