Placement of the asterisk in Objective-C

Question

I have just begun learning Objective-C, coming from a VB .Net and C# .Net background. I understand pointer usage, but in Objective-C examples I see the asterisk placed in s

Answer 1

1, 2 and 4 are equivalent and define a pointer to an NSString. My personal preference is to emulate K&R as much as possible, so I like to use NSString *string;

(NString*)string; though a valid statement, doesn't really do anything by itself.

$ cat foo.m
#include 

void foo()
{
    NSString *string;

    (NSString*) string;  // doesn't do anything
    42;   // doesn't do anything either
}

$ gcc -Wall -c foo.m
foo.m: In function 'foo':
foo.m:7: warning: statement with no effect
foo.m:8: warning: statement with no effect