{"id":11222,"date":"2022-09-26T15:03:59","date_gmt":"2022-09-26T09:33:59","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-assistance-needed-writing-simple-objective-c-program\/"},"modified":"2022-09-26T15:03:59","modified_gmt":"2022-09-26T09:33:59","slug":"solved-assistance-needed-writing-simple-objective-c-program","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-assistance-needed-writing-simple-objective-c-program\/","title":{"rendered":"[Solved] Assistance needed writing simple Objective-C program"},"content":{"rendered":"

[ad_1]
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There are of course many ways to set this up. I can remember being confused when starting out, below is an alternative example to give you something else to look at. <\/p>\n

It is not intended to be fancy but just bare-bones so that you can see a minimal setup of the class with an initializer. <\/p>\n

Note that the only value initialized is the const pi, of course, the radius can be initialized there as well, as nhgrif’s example shows quite nicely.<\/p>\n

Hope this helps!<\/p>\n

\/\/  Circle.h\n\n#import <Foundation\/Foundation.h>\n\n@interface Circle : NSObject\n{\n    double radius;\n    double pi;\n}\n\n@property double radius, pi;\n\n-(double) getArea;\n-(double) getDiameter;\n-(double) getCircumference;\n\n@end\n<\/code><\/pre>\n
And then the implementation:<\/p>\n
\/\/  Circle.m\n\n#import \"Circle.h\"\n\n@implementation Circle\n\n@synthesize radius, pi;\n\n\/\/ Initialize with const pi:\n- (id)init {\n    self = [super init];\n    if (self) {\n        pi = 3.14159;\n        NSLog(@\"Circle created.\");\n    }\n    return self;\n}\n\n-(double) getArea {\n    return pi*radius*radius;\n}\n\n-(double) getDiameter {\n    return 2*radius;\n}\n\n-(double) getCircumference {\n    return 2*pi*radius;\n}\n\n@end\n<\/code><\/pre>\n
And then for main:<\/p>\n
\/\/  main.m\n\n#import <Foundation\/Foundation.h>\n#import \"Circle.h\"\n\nint main(int argc, const char * argv[])\n{\n    @autoreleasepool {\n\n        Circle *aCircle = [[Circle alloc] init];\n\n        \/\/ Use an arbitrary value:            \n        [aCircle setRadius:2];\n\n        NSLog(@\"Area = %f\",[aCircle getArea]);\n        NSLog(@\"Circumference = %f\",[aCircle getCircumference]);\n        NSLog(@\"Diameter = %f\",[aCircle getDiameter]);\n        NSLog(@\"Check pi = %f\",[aCircle pi]);\n\n    }\n    return 0;\n}\n<\/code><\/pre>\n<\/p><\/div>\n
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            2<\/span> <\/p><\/div>\n<\/div>\n
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solved Assistance needed writing simple Objective-C program <\/p>\n","protected":false},"excerpt":{"rendered":"
[ad_1] There are of course many ways to set this up. I can remember being confused when starting out, below is an alternative example to give you something else to look at. It is not intended to be fancy but just bare-bones so that you can see a minimal setup of the class with an … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[519,739,470],"class_list":["post-11222","post","type-post","status-publish","format-standard","hentry","category-solved","tag-class","tag-geometry","tag-objective-c"],"yoast_head":"\n[Solved] Assistance needed writing simple Objective-C program - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-assistance-needed-writing-simple-objective-c-program\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] Assistance needed writing simple Objective-C program - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] There are of course many ways to set this up. 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