doubt in declaration

[rampraveen]

what is the use of below syntax.i got a program(convert numbers to words) which is having this syntax ...............
void pw(long,char[]);

[akdemirc]

it is the same with the below which declares a function taking a first parameter of type long and a second one of type array of char:

void pw(long, char*)

[Banfa]

it is the same with the below which declares a function taking a first parameter of type long and a second one of type array of char:

Not quite the type of the second parameter is not array of char it is pointer to char.