温度转换器不输出 [英] temperature converter not giving output

问题描述

我已经编写了用于iPhone的温度转换代码，但是它无法正常工作，也没有给出任何错误，请帮忙

i have written a code for temperature conversion for iphone but it is not working and neither giving any error please help

界面部分

#import <UIKit/UIKit.h>

float n ;
float k;



@interface farh_celcius_conv_AppDelegate : NSObject <UIApplicationDelegate> {
    UIWindow *window;
    UILabel *display;
    IBOutlet UITextField *farhenite;
    IBOutlet UIButton *convert;

}


-(IBAction) convert; 


@property (nonatomic, retain) IBOutlet UIWindow *window;
@property (nonatomic, retain) IBOutlet UILabel *display;
@property (nonatomic, retain) IBOutlet UITextField *farhenite;
@property (nonatomic, retain) IBOutlet UIButton *convert;
@end

实施部分

#import "farh_celcius_conv_AppDelegate.h"


@implementation farh_celcius_conv_AppDelegate


@synthesize window,display,farhenite;





-(IBAction) convert  {

    NSString *str = [NSString text];

    float n = [str floatValue];


      k = (n - 32)*(5/9);



    [display setText:[NSString stringWithFormat:@"%f",k]];  

}

- (void)applicationDidFinishLaunching:(UIApplication *)application {    

    // Override point for customization after application launch
    [window makeKeyAndVisible];
}


- (void)dealloc {
    [window release];
    [super dealloc];
}


@end

推荐答案

如果要转换在textField中输入的值，则方法应如下所示

If you want to convert the value entered in textField you the method should be like this

-(IBAction) convert  {

    NSString *str = yourTextField.text; // In your case farhenite i guess

    float n = [str floatValue];


      k = (n - 32)*(5/9);



    [display setText:[NSString stringWithFormat:@"%f",k]];  

}

这篇关于温度转换器不输出的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！