title: how to use only numeric keyboard
body: <p>i had made an application of temperature converter in iphone i want that when it launches in simulator only numeric keyboard should come and not the alpha keyboard.</p>
  
  <pre><code>#import "farh_celcius_conv_AppDelegate.h"
  
  float i;
  float s;
  float p;
  
  @implementation farh_celcius_conv_AppDelegate
  
  @synthesize window,display,farhenite,display1;
  
  
  
  
  
  -(IBAction) convert  {
      s = ('0','1','2');
  
      if( p == s)
      {
  
      NSString *str = farhenite. text;
  
      float n = [str floatValue];
  
  
      if (n != 0) {
  
          k =.5559* (n-32);   
          i = 5*(n -32)/9 +273    ;   
  
          [display setText:[NSString stringWithFormat:@"%f",k]];
          [display1 setText:[NSString stringWithFormat:@"%f",i]];     
      }   
  }
  }
  
  - (void)dealloc {
      [window release];
      [super dealloc];
  }
  
  
  @end
  </code></pre>