Adding integers and displaying in a UILabel - ios

Question

I am working on a scoreboard of sorts. The player can adjust three different values (gear, level, and bonuses) that when added should provide a total strength. Each of these values is currently being output as an integer and a UILabel displays its' respective integer. I cannot figure out how to add all three integers and then display them on a UILabel. I am currently developing for iOS 7 but I don't imagine this to be terribly different for current supported OS's. Any help is greatly appreciated.
.h
#import <UIKit/UIKit.h>
int levelCount;
int gearCount;
int oneShotCount;
int totalScoreCount;
#interface ViewController : UIViewController
#property (weak, nonatomic) IBOutlet UILabel *totalScore;
#property (weak, nonatomic) IBOutlet UILabel *playerName;
#property (weak, nonatomic) IBOutlet UILabel *levelNumber;
#property (weak, nonatomic) IBOutlet UILabel *gearNumber;
#property (weak, nonatomic) IBOutlet UILabel *oneShotNumber;
- (IBAction)levelUpButton:(id)sender;
- (IBAction)levelDownButton:(id)sender;
- (IBAction)gearUpButton:(id)sender;
- (IBAction)gearDownButton:(id)sender;
- (IBAction)oneShotUpButton:(id)sender;
- (IBAction)oneShotDownButton:(id)sender;
#end
.m
#import "ViewController.h"
#interface ViewController ()
#end
#implementation ViewController
- (void)viewDidLoad
{
[super viewDidLoad];
int ans = levelCount + gearCount + oneShotCount;
self.levelNumber.text = [NSString stringWithFormat:#"%i", ans];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (IBAction)levelUpButton:(id)sender {
levelCount = levelCount + 1;
self.levelNumber.text = [NSString stringWithFormat:#"%i", levelCount];
}
- (IBAction)levelDownButton:(id)sender {
levelCount = levelCount - 1;
self.levelNumber.text = [NSString stringWithFormat:#"%i", levelCount];
}
- (IBAction)gearUpButton:(id)sender {
gearCount = gearCount + 1;
self.gearNumber.text = [NSString stringWithFormat:#"%i", gearCount];
}
- (IBAction)gearDownButton:(id)sender {
gearCount = gearCount - 1;
self.gearNumber.text = [NSString stringWithFormat:#"%i", gearCount];
}
- (IBAction)oneShotUpButton:(id)sender {
oneShotCount = oneShotCount + 1;
self.oneShotNumber.text = [NSString stringWithFormat:#"%i", oneShotCount];
}
- (IBAction)oneShotDownButton:(id)sender {
oneShotCount = oneShotCount - 1;
self.oneShotNumber.text = [NSString stringWithFormat:#"%i", oneShotCount];
}
#end

Answer 1

Create some sort of updateScore method that is called anytime one of the other values change.
- (void)updateScore {
totalScoreCount = ... // calculate score from levelCount, gearCount, and oneShotCount
self.totalScore.text = [NSString stringWithFormat:#"%i", totalScoreCount];
}
Then in each of your ...UpButton: and ...DownButton: methods you call:
[self updateScore];
Be sure to call this after updating the other value first. Example:
- (IBAction)levelUpButton:(id)sender {
levelCount = levelCount + 1;
self.levelNumber.text = [NSString stringWithFormat:#"%i", levelCount];
[self updateScore];
}