array.m

#import <Foundation/Foundation.h>

int main() {
    NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];

    NSMutableArray *myMutableArray = [NSMutableArray array];
    [myMutableArray insertObject:[NSString stringWithString:@"1"]
                         atIndex:[myMutableArray count]];
    [myMutableArray insertObject:[NSString stringWithString:@"2"]
                         atIndex:[myMutableArray count]];
    [myMutableArray insertObject:[NSString stringWithString:@"3"]
                         atIndex:[myMutableArray count]];
    [myMutableArray insertObject:[NSString stringWithString:@"4"]
                         atIndex:[myMutableArray count]];
    [myMutableArray insertObject:[NSString stringWithString:@"5"]
                         atIndex:[myMutableArray count]];
    NSLog(@"%@", myMutableArray);
    [myMutableArray removeLastObject];
    NSLog(@"%@", myMutableArray);

    [pool release];
    return 0;
}