Question

我构建了一个简单的计算器应用程序，并且正在努力添加小数点按钮，

当我按下小数点按钮时，它会添加小数，但在我输入另一个数字之后

小数点消失所以肯定是错误的。

如果有人可以专门指导我如何解决这个问题，因为我是一名初学者并且让小数点工作我会非常感激。

这是我的.h文件

#import <UIKit/UIKit.h>

int Method;
int SelectNumber;
float RunningTotal;
int currentNumber;
@interface ViewController : UIViewController


{


IBOutlet UILabel * Screen;
}



-(IBAction)Number1:(id)sender;
-(IBAction)Number2:(id)sender;
-(IBAction)Number3:(id)sender;
-(IBAction)Number4:(id)sender;
-(IBAction)Number5:(id)sender;
-(IBAction)Number6:(id)sender;
-(IBAction)Number7:(id)sender;
-(IBAction)Number8:(id)sender;
-(IBAction)Number9:(id)sender;
-(IBAction)Number0:(id)sender;
-(IBAction)Times:(id)sender;
-(IBAction)Devide:(id)sender;
-(IBAction)Subtract:(id)sender;
-(IBAction)PLus:(id)sender;
-(IBAction)Equalls:(id)sender;
-(IBAction)AllClear:(id)sender;
-(IBAction)Decimal:(id)sender;



@end

这里是.m文件中的小数代码

- (IBAction)Decimal:(UIButton *)sender
{
    NSRange range = [self->Screen.text rangeOfString:@"."];
    if (range.location ==NSNotFound){
        self->Screen.text = [ self->Screen.text stringByAppendingString:@"."];
    }
    self.userIsInTheMiddleOfEnteringANumber = YES;
       }

Answer 1

您正在将结果打印为整数，将其更改为浮点％f，您甚至可以选择所需的小数位数：％。02f = 25.00

我构建了一个简单的iOS计算器，但我无法弄清楚如何添加小数点

1 个答案: