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6 Cards in this Set
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Sample hello world
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#import <Foundation/Foundation.h>
int main (int argc, const char *argv[]_ { NSLog (@"Hello, Objective-C!"); return 0; } //main |
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Define array of strings
access an element of the array to print |
NSArray *fruit = [NSArray arrayWithObjects: @"apple", @"bananr", @"mango", nil];
NSLog(@"%@", [fruit objectAtIndex:2]; |
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define a mutable array
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NSMutableArray *counter=[NSMutableArray ArrayWithCapacity:24];
You should always define an approximate capacity |
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Synthesized accessor methods
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@property -> .h
@synthesize -> .m |
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inheritance syntax
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@interface Sphere: Circle {
//your code } |
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Type ID
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int x = 50;
id y; y = x; NSLog(@"%@", y); //50 on screen char c='a'; NSLog(@"%@",y); //a y is and integer of type id that can hold any value |
