'NSAutoreleasePool' is unavailable: not available in automatic reference counting mode

'NSAutoreleasePool' is unavailable: not available in automatic reference counting mode

 'release' is unavailable: not available in automatic reference counting mode

ARC forbids explicit message send of 'release'

These all above 3 errors can occurs while using "NSAutoreleasePool" with "ARC" on

    NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];  

    NSLog (@"hello, this old way of using autorelease pool!!");

    [pool drain];

    return 0;

Change above code to below code

    @autoreleasepool {

    NSLog (@"hello, this is new way of using autorelease pool with arc!!");

     }