//定义四个整数类型
        int a = 789;
        int b = 456;
        int c = 123;
        int d = 753;

        //进行封装
        NSNumber *intNumberA = [NSNumber numberWithInt:a];
        NSNumber *intNumberB = [NSNumber numberWithInt:b];
        NSNumber *intNumberC = [NSNumber numberWithInt:c];
        NSNumber *intNumberD = [NSNumber numberWithInt:d];

 

12,输出如下、转换完之后就是对象输出的格式了、

nslog（@“%@”，A）;