//
//  main.m
//  mylearn

//

#import <Foundation/Foundation.h>
#import "Mypoint.h"
@implementation Mypoint
{
    int myx;
    int myy;
}
-(void) print{
    NSLog(@"(%i,%i)",myx,myy);
}
-(void)setx:(int)x{
    myx=x;
}
-(void)sety:(int)y{
    myy=y;
}
-(int) myx{
    return myx;
}
-(int) myy{
    return myy;
}
+(void)sayhello{
    NSLog(@"hello");
}
@end

int main(int argc, const char * argv[]) {
    @autoreleasepool {
        // insert code here...
        Mypoint *mypoint;
        [Mypoint sayhello];
        mypoint=[Mypoint alloc];
        mypoint=[mypoint init];
        [mypoint setx:10];
        [mypoint sety:20];
        NSLog(@"point:");
        NSLog(@"%i",[mypoint myx]);
        [mypoint print];
    }
    return 0;
}

2016-09-04 21:46:29.977 mylearn[502:14739] hello

2016-09-04 21:46:29.979 mylearn[502:14739] point:

2016-09-04 21:46:29.979 mylearn[502:14739] 10

2016-09-04 21:46:29.980 mylearn[502:14739] (10,20)