#import <stdio.h>
#import <objc/Object.h>

@protocol ClassNameToString
- (id) ToString;
@end

@interface A : Object
{
	char *name;
}
- (id) init;
- (id) free;
@end

@interface B : Object
@end

@implementation A
- (id) init {
	[super init];
	name = (char *)malloc(255);
	sprintf(name , "%s . A@%d" , __FILE__ , self);
	return self;
}
- (id) free {
	free(name);
	return [super free];
}
- (id) ToString { return (id) name; }
@end
@implementation B
- (id) ToString { return (id)"This is Object of B Class"; }
@end

int main() {
	id objA = [A new];
	id objB = [B new];
	printf("objA = %s\n" , [objA ToString]);
	printf("objB = %s\n" , [objB ToString]);
	[objA free];
	[objB free];

	return 0;
}