CODEWITHSUNDEEP
objective-ccocoa
Jasonwilliams10
Jasonwilliams10

Reputation: 292

Xcode 4.2 decimal places

I know this has been asked a lot of times, but I have honestly searched and I am still having problems making this work. I am not very good at coding as I am just starting to learn and teach myself. I have looked in the developer's library and all the answers on here and on Google, but I am having problems making this work. A lot of information I seem to come across is for older versions of IOS and Xcode. I need to have the number display just places after the decimal. For example, if the output is 90.909090, I need it to show 90.90 or 90.91. This works, but the output just shows 0.00, it is not reading the float. I know the output of this is just showing the NSString stringWithFormat:@"%.2f" in the weightkg text filed. I am having problems referencing the float to show in this format.

- (IBAction)calculateweight:(id)sender {
  float wl = ([weightlbs.text floatValue]);
  float wt = (wl/2.2);

  weightkg.text =  [[NSNumber numberWithFloat:wt] stringValue]; 
 [weightkg setText:[NSString stringWithFormat:@"%.2f"]];

}

Upvotes: 2

Views: 8598

Answers (2)

Kevin Sylvestre
Kevin Sylvestre

Reputation: 38012

You should be using:

float wt = ...;
weightkg.text = [NSString stringWithFormat:@"%.2f", wt];

That is, you must pass the variable value to your stringWithFormat call.

Upvotes: 4

Gary
Gary

Reputation: 5732

You're not passing the float value to stringWithFormat, try this.

- (IBAction)calculateweight:(id)sender {
  float wl = ([weightlbs.text floatValue]);
  float wt = (wl/2.2);

 [weightkg setText:[NSString stringWithFormat:@"%.2f", wt]];

}

Upvotes: 8

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