OC-NSNumber

本文主要是介绍OC-NSNumber，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

  //NSNumber(封装类型的时候是封装有效的数据类型)NSNumber *number = [NSNumber numberWithInt:5];NSLog(@"%@",number);NSNumber *number1 = [NSNumber numberWithFloat:5];NSLog(@"%@",number1);NSNumber *number2 = [NSNumber numberWithDouble:5.0f];NSLog(@"%@",number2);NSNumber *number3 = [NSNumber numberWithFloat:5.3];NSLog(@"%@",number3);

输出结果：

2014-12-17 20:52:15.266 OC-lwy-3（OC数据类型）[1651:534402] 5

2014-12-17 20:52:15.267 OC-lwy-3（OC数据类型）[1651:534402] 5

2014-12-17 20:52:15.267 OC-lwy-3（OC数据类型）[1651:534402] 5

2014-12-17 20:52:15.267 OC-lwy-3（OC数据类型）[1651:534402] 5.3

Program ended with exit code: 0

NSNumberFormatter

        NSNumber *number = [NSNumber numberWithInt:123456];//创建NSNumberFormatter对象NSNumberFormatter *formatter = [[NSNumberFormatter alloc]init];//设定格式[formatter setNumberStyle:NSNumberFormatterSpellOutStyle];//连接fomattter对象和number对象NSString *string = [formatter stringFromNumber:number];NSLog(@"string = %@",string);//NSNumberFormatterSpellOutStyle :十二万三千四百五十六

输出结果：

2014-12-17 20:54:07.766 OC-lwy-3（OC数据类型）[1667:549215] string = 十二万三千四百五十六

Program ended with exit code: 0

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