74 lines
2.2 KiB
Objective-C
74 lines
2.2 KiB
Objective-C
#import <Foundation/Foundation.h>
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@interface RCPoint : NSObject {
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int x, y;
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}
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-(id)initWithX:(int)x0;
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-(id)initWithX:(int)x0 andY:(int)y0;
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-(id)initWithPoint:(RCPoint *)p;
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@property (nonatomic) int x;
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@property (nonatomic) int y;
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@end
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@implementation RCPoint
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@synthesize x, y;
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-(id)initWithX:(int)x0 { return [self initWithX:x0 andY:0]; }
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-(id)initWithX:(int)x0 andY:(int)y0 {
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if ((self = [super init])) {
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x = x0;
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y = y0;
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}
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return self;
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}
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-(id)initWithPoint:(RCPoint *)p { return [self initWithX:p.x andY:p.y]; }
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-(NSString *)description { return [NSString stringWithFormat:@"<RCPoint %p x: %d y: %d>", self, x, y]; }
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@end
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@interface RCCircle : RCPoint {
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int r;
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}
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-(id)initWithCenter:(RCPoint *)p andRadius:(int)r0;
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-(id)initWithX:(int)x0 andY:(int)y0 andRadius:(int)r0;
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-(id)initWithCircle:(RCCircle *)c;
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@property (nonatomic) int r;
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@end
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@implementation RCCircle
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@synthesize r;
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-(id)initWithCenter:(RCPoint *)p andRadius:(int)r0 {
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if ((self = [super initWithPoint:p])) {
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r = r0;
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}
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return self;
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}
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-(id)initWithX:(int)x0 andY:(int)y0 andRadius:(int)r0 {
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if ((self = [super initWithX:x0 andY:y0])) {
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r = r0;
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}
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return self;
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}
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-(id)initWithCircle:(RCCircle *)c { return [self initWithX:c.x andY:c.y andRadius:c.r]; }
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-(NSString *)description { return [NSString stringWithFormat:@"<RCCircle %p x: %d y: %d r: %d>", self, x, y, r]; }
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@end
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int main(int argc, const char *argv[]) {
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NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
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NSLog(@"%@", [[[RCPoint alloc] init] autorelease]);
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NSLog(@"%@", [[[RCPoint alloc] initWithX:3] autorelease]);
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NSLog(@"%@", [[[RCPoint alloc] initWithX:3 andY:4] autorelease]);
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NSLog(@"%@", [[[RCCircle alloc] init] autorelease]);
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NSLog(@"%@", [[[RCCircle alloc] initWithX:3] autorelease]);
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NSLog(@"%@", [[[RCCircle alloc] initWithX:3 andY:4] autorelease]);
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NSLog(@"%@", [[[RCCircle alloc] initWithX:3 andY:4 andRadius:7] autorelease]);
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RCPoint *p = [[[RCPoint alloc] initWithX:1 andY:2] autorelease];
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NSLog(@"%@", [[[RCCircle alloc] initWithPoint:p] autorelease]);
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NSLog(@"%@", [[[RCCircle alloc] initWithCenter:p andRadius:7] autorelease]);
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NSLog(@"%d", p.x); // 1
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p.x = 8;
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NSLog(@"%d", p.x); // 8
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[pool release];
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return 0;
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}
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