OC语法--NSNumber对象

NSNumber对象用法：

void test(void)
{
    NSNumber *myNumber, *floatNumber,*intNumber;
    NSInteger myInt;

    intNumber = [NSNumber numberWithInt:10];
    myInt = [intNumber integerValue];
    NSLog(@"%li",myInt);

    myNumber = [NSNumber numberWithLong:0xabced];
    NSLog(@"%lx",[myNumber longValue]);

    floatNumber = [NSNumber numberWithFloat:9];
    NSLog(@"%g",[floatNumber floatValue]);

    if ([intNumber isEqualToNumber:floatNumber] == YES) {
        NSLog(@"num are equal");
    } else {
        NSLog(@"num are not equal");
    }
    if ([intNumber compare:floatNumber] == NSOrderedAscending) {
        NSLog(@"first number less than second");
    }
}