第一个OC程序

#import <Foundation/Foundation.h>int main(int argc, const char * argv[]){    @autoreleasepool {                NSMutableArray *items = [[NSMutableArrayalloc] init];                [items addObject:@"One"];        [items addObject:@"Two"];        [items addObject:@"Three"];                [items insertObject:@"Zero"atIndex:0];                for(int i=0;i<[itemscount];i++){            NSLog(@"%@",[itemsobjectAtIndex:i]);        }    }    return 0;}