A method with one argument (parameter) and a return type

gistfile1.txt

// To create a method that accepts an integer (int) and returns that integer squared
 
- (void)viewDidLoad
{
    [super viewDidLoad];
  
    // first we delare our integer
    int myInt = 666

    // now look what's happening here - it will print "666 squared is 443556"
    // how does this happen? 
    // When we send myInt to our method - it jumps out of viewDidLoad and into our method
    // it then will print out "You passed in the value" - then it will square our int and return it to the ViewDidLoad
    NSLog(@"%i squared is %i", myInt, [self myMethod:(myInt)];
    
}
 
-(int) myMethod:(int)funBoy{
    
    // we print the value that was passed to us from viewDidLoad

    NSLog(@"You passed in the value %i", funBoy);
    
    // we then multiply this value by itself to get the square

    int returnInt = funBoy * funBoy;
    
    // we then return our integer
    // this effectively sends back that value to viewDidLoad
    // our method in viewDidLoad will now be equal to that value
    // i.e. [self myMethod:(myInt)] == myInt * myInt

    return returnInt;
    
}