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如何用数字打印数字? [复制]
原标题:How to print digit by digit of a number? [duplicate]
  • 时间:2012-04-15 00:53:29
  •  标签:
  • c
  • digits
This question already has answers here:
Closed 11 years ago.

Possible Duplicate:
Identify the digits in a given number.

I need to print each digit of number without convert it to string. It s possible? For example:

int n = 1234;
int x;

while( ?? ) {
  x = ??
  printf("%d
", x); 
}

原文:

1
2
3
4

我不知道如何做到这一点。 提前感谢。

问题回答

除非你告诉我,那是家事,否则我拿不出全部答案。

注:x / 10 > 贴上x,删除了最后一位数。 http://code>123 / 10 = 12,45 / 10 = 4

请注意,<代码>x% 10使您获得<代码>x最后数。 http://code>123 % 10 = 3,45 % 10 = 5 , 等

这实际上触及数字理论/数学方法。 例如,你可以写出编号1234的编号:1x10^3 + 2x10^2 + 3x10^1 + 4x10^0>。 现在思考如何利用<代码>%(mod)和(integer Division)提取每一位数。

如果你知道数字的最大数目,你可以使用(或%)数字。

例如,如果你想找到数千个地方,答案就是这样。


num =...
int thousands = (num / 1000) % 10

您实际上可以在一旁这样做。





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