Question

I am just new on Objective-C , well i have not get in to cocoa touch library yet, but i am try to follow Objective-C book and write some classes for get in more practice .

I have a error in Implementation statement , could you tell me which part that i made mistake ?

#import "getterSetter.h"

@implementation getterSetter

@synthesize airportName;

- (char) print : (char) name 
{
    return name;
}

- (int) zip : (int) zipair
{
    return zipair;
}
@end


int main(int argc,char *argv[])
{
    char *airportName;
    getterSetter *airport = [[getterSetter alloc]init];

    NSLog(@"Please enter the airport name:\n");
    scanf("%c",&airportName);

    NSLog(@"Please enter the airport name:\n");
    scanf("%c",&airportName);    

    NSLog(@"Your Airport Name is :\n");
    [airport print:*airportName];
}
#import <Foundation/Foundation.h>

@interface getterSetter : NSObject
{
    char *airportName;
    int zipCode;
    char *airportCityName;
}

- (char) print : (char) name;

- (int) zip;

@property char *airportName;

@end

Answer 1

In getterSetter.h, you declare a method

- (int) zip;

but in the .m file you implement

- (int) zip : (int) zipair

That is a different method, therefore the compiler complains about the missing implementation of - (int) zip.