Design and implementation of electronic menus for iOS development (inheritance, encapsulation, polymorphism)

  main.m//  E-menu//#import <Foundation/Foundation.h> #import "Food.h" #import "CoolFood.h" #import " HotFood.h "#import" MainFood.h "#import" Drinks.h "#import" BillBoard.h "int main (int argc, const char * argv[]) {Food            * food = [[Food alloc]init];    [Food showinformation:@ "andshowmaterial:@" pork onion ginger garlic "andshownurition:@" calcium iron Zinc new vitamin "];    NSLog (@ "%@", food);    @autoreleasepool {                //Insert code        here ... NSLog (@ "Hello, world!");            }    return 0;}

  menu.h//  E-menu//#import <Foundation/Foundation.h> #import "Food.h" #import "CoolFood.h" #import " HotFood.h "#import" MainFood.h "#import" Drinks.h "#import" BillBoard.h "@interface menu:nsobject{    /** used to record the number of order meals * *    int _recordoffood;        /** is used to record order status */    BOOL _statusoffood;        /** used to record food prices */    int _priceoffood;} -(void) Showinformation: (food *) food; @end

  menu.m//  E-menu//#import "Menu.h" @implementation menu-(void) Showinformation: (Food *) food{    if ([ Food Iskindofclass:[coolfood class]) {        Coolfood * cool = (Coolfood *) food;        [Cool show];    }    else if ([Food Iskindofclass:[hotfood class]])    {        Hotfood * hot = (Hotfood *) food;        [Hot show];    }    else if ([Food Iskindofclass:[mainfood class]])    {        Mainfood * Mainfood = (Mainfood *) food;        [Mainfood show];    }    Else    {        drinks * drinks = (drinks *) food;        [Drinks show];}    } @end

  food.h//  Electronic menu///*    can be implemented using inherited    electronic menus    1. Food class */#import <foundation/foundation.h>@ Interface food:nsobject{    /** used to record the name of the dish * *    * NSString * _foodname;        /** Composition Material    */NSString * _material;        /** Nutrition Information    * * NSString * _nutrition;        /** used to record food types * *    NSString * _kindoffood;} @property NSString * foodname; @property nsstring * material; @property nsstring * NUTRITION; @property NSString * Kindoffood ;-(void) Showinformation: (nsstring*) foodname andshowmaterial: (NSString *) material andshownurition: (NSString *) Nutrition; @end

  food.m//  E-menu//#import "Food.h" @implementation food@synthesize foodname = _foodname; @synthesize material = _material; @synthesize nutrition = _nutrition; @synthesize kindoffood = _kindoffood;-(void) Showinformation: ( nsstring*) foodname andshowmaterial: (NSString *) material andshownurition: (NSString *) nutrition; {    _foodname = foodname;    _material = material;    _nutrition = nutrition;    NSLog (@ "%@%@%@", _foodname,_material,_nutrition);} -(NSString *) description{    return [nsstring stringwithformat:@ "Food Name:%@ Ingredients:%@ Nutrients:%@", _foodname,_material,_ Nutrition];} @end

#import "Food.h" @interface coolfood:food-(void) show; @end

#import "CoolFood.h" @implementation coolfood-(void) show{    NSLog (@ "You chose a cold dish");} @end

#import "Food.h" @interface hotfood:food-(void) show; @end

#import "HotFood.h" @implementation hotfood-(void) show{    NSLog (@ "You chose a hot dish");} @end

#import "Food.h" @interface mainfood:food-(void) show; @end

#import "MainFood.h" @implementation mainfood-(void) show{    NSLog (@ "You chose a hot dish");} @end

#import "Food.h" @interface drinks:food-(void) show; @end

#import "Drinks.h" @implementation drinks-(void) show  {    NSLog (@ "Your choice is Wine");} @end

#import <Foundation/Foundation.h> @interface billboard:nsobject{    /** ranking */    int _rank;        /** comments */    NSString * _comment;} -(ID) init;-(void) Showrank: (int) rank; @end

#import "BillBoard.h" @implementation billboard-(ID) init{self    = [super init];    if (self!=nil) {        _rank = 0;    }    return self;} -(void) Showrank: (int) rank{    _rank + = rank;    NSLog (@ "Your rank is%d", _rank);} @end

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Design and implementation of electronic menus for iOS development (inheritance, encapsulation, polymorphism)