学步园

@property (strong, nonatomic) IBOutlet UISlider *zoomSelector;

@property (strong, nonatomic) IBOutlet UILabel *testLabel;

- (IBAction)changeSliderValue:(id)sender;

@synthesize zoomSelector;

@synthesize testLabel;

- (IBAction)changeSliderValue:(id)sender 

{ 

   
int coefficient =
zoomSelector.value;

   
float testLabelValue =
0.1 * zoomCoefficient;

   
testLabel.text = [NSString
stringWithFormat:@"%.1f",testLabelValue];

}