Update objvectiv-C.html.markdown

objvectiv-C.html.markdown

@@ -15,10 +15,32 @@ It's is a general-purpose, object-oriented programming language that adds Smallt
 Multi-line comments look like this.
 */
 
+##Basic types
+// all the primitive variable types are the same as in C
+// char, int, long, double, float
+
+
+// Simple, common classes
+// number
+NSNumber *firstNumber = @1;
+NSNumber *secondNumber = @23.0;
+NSNumber *boolNumber = @YES; 
+
+// string
+NSString *aString = @"some string";
+
+// array
+NSArray *array = @[ @1, @2];
+
+// dictionary
+NSDictionay *dictionary = @{ @"aKey" : @"aValue", @"aKey2" : @"aValue2" };
+
 // Import headers with #import
 #import <UIKit/UIKit.h>
 #import "SomeAppDelegate.h"
 
+##Coding classes
+
 // Declare your class in a header(.h) file:
 
 @interface UserObject : NSObject{
@@ -43,19 +65,29 @@ Multi-line comments look like this.
 
 - (NSString*) instanceMethodWithParmeter:(NSString*)string;
 {
-	return [NSString stringWithString:string];
+	return @"New string";
 }
 
+- (NSString*) otherMethodWithString:(NSString*)string;
+{
+	return [NSString stringWithString:string];
+}
 @end
 
 // Create an object instance by allocating memory and initializing it. An object is not fully functional until both steps have been completed.
 UserObject *someObject = [[UserObject alloc] init];
 
+##Calling Methods
+
 // The Objective-C model of object-oriented programming is based on message passing to object instances. 
 // In Objective-C one does not simply call a method; one sends a message.
 
-[someObject instanceMethodWithParmeter@"Steve Jobs"];
+[someObject instanceMethodWithParmeter:@"Steve Jobs"];
 
+##Nested Messages
+// nested messages look like this:
+
+[someObject instanceMethodWithParmeter:[someObject otherMethodWithString:@"Jony Ive"]];
 
 ```
 ## Further Reading