Question

this is my class

#import “Year2011.h”

@implementation Year2011

- (void)Men:(double)speed{
    if (ramspeed <= 180000) {
        cal = 0;
    }

here i have HelloViewController class how can i call Year2011 class and Men mathod.
now i tried like this.

@class Year2010;

 IBOutlet Year2010 *Year2010;

calling

double speed=([anualIncome.text doubleValue]);
[Year2010 Men:income];

this one is showing unrecognized selector sent to classerr.guide me i’m new to objective c.

Answer 1

You are mixing up Class name and Instance name. You also seem to have problems understanding the scope of an instance.

-1- change your instance name to lowercase initial – that is IBOutlet Year2010 *year2010;

-2- change your method names to lowercase initial – that is - (void)men:(double)speed

The compiler currently assumes that Men is a static class method, but you never defined it as such, hence the error.