Adds iOS files for crossplatform calculator example.

examples/cross_calculator/ios/src/AppDelegate.h

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+#import <UIKit/UIKit.h>
+
+@interface AppDelegate : UIResponder <UIApplicationDelegate>
+
+@property (strong, nonatomic) UIWindow *window;
+
+@end

examples/cross_calculator/ios/src/AppDelegate.m

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+#import "AppDelegate.h"
+
+#import "backend.h"
+
+@implementation AppDelegate
+
+@synthesize window = _window;
+
+- (void)dealloc
+{
+	[_window release];
+	[super dealloc];
+}
+
+- (BOOL)application:(UIApplication *)application
+	didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
+{
+	self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen]
+		bounds]] autorelease];
+	// Override point for customization after application launch.
+	self.window.backgroundColor = [UIColor whiteColor];
+	[self.window makeKeyAndVisible];
+
+	// Call nimrod code and store the result.
+	const int a = 3;
+	const int b = 12;
+	const int c = myAdd(a, b);
+
+	// Add a label to show the results of the computation made by nimrod.
+	UILabel *label = [[UILabel alloc] initWithFrame:self.window.bounds];
+	label.textAlignment = UITextAlignmentCenter;
+	label.text = [NSString stringWithFormat:@"myAdd(%d, %d) = %d", a, b, c];
+	[self.window addSubview:label];
+	[label release];
+
+	return YES;
+}
+
+@end

examples/cross_calculator/ios/src/cross-calculator-Prefix.pch

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+#import <Availability.h>
+
+#ifndef __IPHONE_3_0
+#warning "This project uses features only available in iOS SDK 3.0 and later."
+#endif
+
+#ifdef __OBJC__
+	#import <UIKit/UIKit.h>
+	#import <Foundation/Foundation.h>
+#endif

examples/cross_calculator/ios/src/main.m

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+#import <UIKit/UIKit.h>
+
+#import "AppDelegate.h"
+#import "backend.h"
+
+int main(int argc, char *argv[])
+{
+	@autoreleasepool {
+		NimMain();
+		return UIApplicationMain(argc, argv, nil,
+			NSStringFromClass([AppDelegate class]));
+	}
+}