Custom Object Class

#import <Foundation/Foundation.h>

@interface Person : NSObject

@property(nonatomic,strong)NSString *firstName;

@property(nonatomic,strong)NSString *lastName;

-(id)initWithAdrianFirstName:(NSString*)firstName

                withLastName:(NSString*)lastName;

-(NSString*)description;

@end

#import "Person.h"

@implementation Person

-(id)initWithAdrianFirstName:(NSString *)firstName withLastName:(NSString *)lastName

{

    self=[super init];

    self.firstName=firstName;

    self.lastName=lastName;

    return self;

    

}

-(NSString*)description{

    

    return [NSString stringWithFormat:@"%@,%@",self.firstName,self.lastName];

}

@end

- (void)viewDidLoad

{

Person *p=[[Person alloc]initWithAdrianFirstName:@"dhanushka" withLastName:@"Adrian"] ;

    personLable.text=[p description];

}

Inter

http://www.cquestions.com/2011/08/prime-number-program-in-c-using.html

#include<stdio.h>

int isPrime(int,int);

int main(){

    int num,prime;

    printf("Enter a positive number: ");

    scanf("%d",&num);

    prime = isPrime(num,num/2);

   if(prime==1)

        printf("%d is a prime number",num);

   else

      printf("%d is not a prime number",num);

   return 0;

}

int isPrime(int num,int i){

    if(i==1){
        return 1;
    }else{

       if(num%i==0)

         return 0;

       else

         isPrime(num,i-1);

    }

}

Create Gradient UIView in IOS

01. Create NSObject Class Call "GradientBackground" and add this code

.h

#import <Foundation/Foundation.h>

#import <QuartzCore/QuartzCore.h>

@interface GradientBackground : NSObject

+(CAGradientLayer*) yellowGradient;

+(CAGradientLayer*) greenGradient;

+(CAGradientLayer*) orangeGradient;

+(CAGradientLayer*) redGradient;

@end

----------------------------------------------------------------------

.m

#import "GradientBackground.h"

@implementation GradientBackground

+ (CAGradientLayer*) yellowGradient {

   

    UIColor *darkOp =

    [UIColor colorWithRed:229/255.0f green:184/255.0f blue:0/255.0f alpha:1.0];

    UIColor *lightOp =

    [UIColor colorWithRed:255/255.0f green:204/255.0f blue:0/255.0f alpha:1.0];

   

    // Create the gradient

    CAGradientLayer *gradient = [CAGradientLayer layer];

   

    // Set colors

    gradient.colors = [NSArray arrayWithObjects:

                       (id)lightOp.CGColor,

                       (id)darkOp.CGColor,

                       nil];

   

   

   

   

   

    CAGradientLayer *headerLayer = [CAGradientLayer layer];

    headerLayer.colors =   gradient.colors;

   

   

    return headerLayer;

   

}

+ (CAGradientLayer*) greenGradient {

   

    UIColor *darkOp =

    [UIColor colorWithRed:86/255.0f green:178/255.0f blue:73/255.0f alpha:1.0];

   

    UIColor *lightOp =

    [UIColor colorWithRed:113/255.0f green:206/255.0f blue:101/255.0f alpha:1.0];

   

   

    // Create the gradient

    CAGradientLayer *gradient = [CAGradientLayer layer];

   

    // Set colors

    gradient.colors = [NSArray arrayWithObjects:

                       (id)lightOp.CGColor,

                       (id)darkOp.CGColor,

                       nil];

   

   

   

   

   

    CAGradientLayer *headerLayer = [CAGradientLayer layer];

    headerLayer.colors =   gradient.colors;

   

   

    return headerLayer;

   

}

+ (CAGradientLayer*) orangeGradient {

    //247,157,97  223,142,88

   

   

    UIColor *darkOp =

    [UIColor colorWithRed:223/255.0f green:142/255.0f blue:88/255.0f alpha:1.0];

    UIColor *lightOp =

    [UIColor colorWithRed:247/255.0f green:157/255.0f blue:97/255.0f alpha:1.0];

   

    // Create the gradient

    CAGradientLayer *gradient = [CAGradientLayer layer];

   

    // Set colors

    gradient.colors = [NSArray arrayWithObjects:

                       (id)lightOp.CGColor,

                       (id)darkOp.CGColor,

                       nil];

   

   

   

   

   

    CAGradientLayer *headerLayer = [CAGradientLayer layer];

    headerLayer.colors =   gradient.colors;

   

   

    return headerLayer;

   

}

+ (CAGradientLayer*) redGradient {

    /*

     243,49,64

     195,27,40

    

     

     */

   

    UIColor *darkOp =

    [UIColor colorWithRed:195/255.0f green:27/255.0f blue:40/255.0f alpha:1.0];

    UIColor *lightOp =

    [UIColor colorWithRed:243/255.0f green:49/255.0f blue:64/255.0f alpha:1.0];

   

    // Create the gradient

    CAGradientLayer *gradient = [CAGradientLayer layer];

   

    // Set colors

    gradient.colors = [NSArray arrayWithObjects:

                       (id)lightOp.CGColor,

                       (id)darkOp.CGColor,

                       nil];

   

   

   

   

   

    CAGradientLayer *headerLayer = [CAGradientLayer layer];

    headerLayer.colors =   gradient.colors;

   

   

    return headerLayer;

   

}

@end

02. Add this code to your ViewController

.h

---------------------------------------------------------

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController

@property(nonatomic,strong)IBOutlet UIView *adrianView;

@property(nonatomic,strong)IBOutlet UIView *adrianView1;

@property(nonatomic,strong)IBOutlet UIView *adrianView2;

@property(nonatomic,strong)IBOutlet UIView *adrianView3;

@end

.m

---------------------------------------------------

#import "ViewController.h"

#import "GradientBackground.h"

@implementation ViewController

@synthesize adrian,adrian1,adrian2,adrian3;

#pragma mark - View lifecycle

- (void)viewDidLoad

{

    [super viewDidLoad];

    // Do any additional setup after loading the view, typically from a nib.

}

- (void)viewDidUnload

{

    [super viewDidUnload];

    // Release any retained subviews of the main view.

    // e.g. self.myOutlet = nil;

}

- (void)viewWillAppear:(BOOL)animated

{

    [super viewWillAppear:animated];

    //Add gradient background

    CAGradientLayer *bgLayer = [BackgroundLayer orangeGradient];

    bgLayer.frame = adrianView.bounds;

    [adrianView.layer insertSublayer:bgLayer atIndex:0];

   

    CAGradientLayer *bgLayer1 = [BackgroundLayer redGradient];

    bgLayer1.frame = adrianView1.bounds;

    [adrianView1.layer insertSublayer:bgLayer1 atIndex:0];

   

    CAGradientLayer *bgLayer2 = [BackgroundLayer yellowGradient];

    bgLayer2.frame = adrianView2.bounds;

    [adrianView2.layer insertSublayer:bgLayer2 atIndex:0];

   

   

    CAGradientLayer *bgLayer3 = [BackgroundLayer greenGradient];

    bgLayer3.frame = adrianView3.bounds;

    [adrianView3.layer insertSublayer:bgLayer3 atIndex:0];

   

   

   

   

}

- (void)viewDidAppear:(BOOL)animated

{

    [super viewDidAppear:animated];

}

- (void)viewWillDisappear:(BOOL)animated

{

    [super viewWillDisappear:animated];

}

- (void)viewDidDisappear:(BOOL)animated

{

    [super viewDidDisappear:animated];

}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation

{

    // Return YES for supported orientations

    return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);

}

@end

03. Run the project

Connect the outlet in .xib file

04. Run the project