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使用itoa打印BCD值

[英]print BCD value with itoa

原文 2012-10-31 13:22:23 8 1 c++/ encoding/ itoa

I need to print on screen a variable value that is encoded in BCD. 我需要在屏幕上打印以BCD编码的变量值。

Do you know whether is possible to print it on screen by using itoa ? 您知道是否可以使用itoa在屏幕上打印它？

If that is possible, how to do that? 如果可能的话，该怎么做？

1 个解决方案

No, itoa will not help. 不， itoa将无济于事。 You want to look at the hexadecimal representation, so use hex like in cout << hex << n << endl; 您想查看十六进制表示形式，因此请像在cout << hex << n << endl;那样使用hex cout << hex << n << endl;

Note: BCD codes the digits as 4-bit-sequences 0000 to 1001, which in hexadecimal are 0 to 9. So 23 as BCD would be 0010 0011 bitwise, or in fact as 8bit integer it would be 35, so converting this to a string will not be of much use. 注意：BCD将数字编码为4位序列0000至1001，十六进制为0至9。因此，由于BCD的23位将按位表示0010 0011 ，或者实际上是8位整数，则应为35，因此将其转换为a字符串没有多大用处。