#import <UIKit/UIKit.h>
#import "Calculator.h"
//#import "NSString+FloatHandle.h"
@interface CalculatorViewController : UIViewController
@property(nonatomic,strong)UITextField *TF;
@property(nonatomic,strong)Calculator *cl;
@property(nonatomic,assign)NSInteger emptyCount;

/*密码用于关闭计算器界面*/
@property(nonatomic,copy)NSString *pwd;

@end