Calling a float return from method 1 in another method Objective-C

Question

I'm trying to return the value of "totaal" in an NSLog() message. If I put all the code in the - (IBAction)txtChangeEinde:(id)sender it works fine, I'm just trying to figure out how those methods and classes work.

@implementation Oak
@synthesize txtEinde,txtBegin,cboSchaal;

- (float)berekenTotaal:(float) totaal{
  begin = [txtEinde floatValue];
  einde = [txtBegin floatValue];
  if (begin<0) {
    begin= begin*-1;
  }
  totaal = begin + einde;



  return totaal;

}
  - (IBAction)txtChangeEinde:(id)sender {
    //where it goes wrong!
    NSLog(@"totaal: %.2f",[berekenTotaal totaal]);


}

Sample Code (image)

Why does the `berekenTotaal` method take a `float` parameter? The value is not used in the implementation of the method. — rmaddy, Jul 19 '13 at 04:55
@maddy well, i'm wondering if the entire idea of the methods and classes are correct. So if you have some fine-tuning and global line extra's. I'd be great! — Verbe, Jul 19 '13 at 04:58

score 0 · Accepted Answer · answered Jul 19 '13 at 04:29

0

call like this,

- (IBAction)txtChangeEinde:(id)sender {

    NSLog(@"totaal: %.2f",[self berekenTotaal:totaal]);   OR

    NSLog(@"totaal: %.2f",[self berekenTotaal:someFloatValue]);


}

answered Jul 19 '13 at 04:29

Balu

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Just tried them both, I get the warning: "use of undeclared identifier 'totaal'" – Verbe Jul 19 '13 at 04:44
@Ben Vertonghen:in the place someFloatValue you can take somefloat value or define like this float someFloatValue = 12.5; – Balu Jul 19 '13 at 04:45
NSLog(@"totaal: %.2f",[self berekenTotaal:0]); Well, this works but I wonder why? – Verbe Jul 19 '13 at 04:49
once read this one ,http://stackoverflow.com/questions/591969/how-can-i-call-a-method-in-objective-c – Balu Jul 19 '13 at 04:51
Thanks! I'll try and figure it out, héhé – Verbe Jul 19 '13 at 04:52

Calling a float return from method 1 in another method Objective-C

1 Answers1