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Start your free trialYAO GANG
3,330 PointsHow can I write a method in one page to pass this code challenge? I write this method in one Cococlass and main.m
calculate.h
import <Foundation/Foundation.h>
@interface calculateTip : NSObject
@property (nonatomic) float subtotal;
- (void)multiply;
@end
calculate.m
import "calculateTip.h"
@implementation calculateTip
-
(void)multiply{
self.subtotal = self.subtotal * 0.2;
}
@end
main.m
import <Foundation/Foundation.h>
import "calculateTip.h"
calculateTip *result = [[calculateTip alloc]init]; [result multiply];
#calculate.h
#import <Foundation/Foundation.h>
@interface calculateTip : NSObject
@property (nonatomic) float subtotal;
- (void)multiply;
@end
#calculate.m
#import "calculateTip.h"
@implementation calculateTip
- (void)multiply{
self.subtotal = self.subtotal * 0.2;
}
@end
#main.m
#import <Foundation/Foundation.h>
#import "calculateTip.h"
calculateTip *result = [[calculateTip alloc]init];
[result multiply];
1 Answer
Andres Aguero
30,545 PointsHi there,
You need to specify the return type as float not as void.
-(float) calculateTip: (float) subtotal {
return subtotal * .2;
}
Then you need to copy the method signature into the interface/header file to be able to use it on other files like this.
-(float) calculateTip: (float) subtotal;
YAO GANG
3,330 PointsYAO GANG
3,330 Pointsyes. Thanks a lot