2转换成字节的整数。 [英] Convert 2 bytes into an integer

问题描述

我收到为2个字节（至少显著字节在前）的端口号，我想将它转换为整数，这样我可以使用它。我做了这样的：

 字符BUF [2]; //当接收到的字节是焦炭端口[2];端口[0] = buf中[1];端口[1] = buf中[0];INT数= 0;数=（*（（INT *）端口））;
 

不过，有一些错误的，因为我没有得到正确的端口号。有任何想法吗？

解决方案

  

我收到的2字节的端口号（至少显著字节在前）

您就可以做到这一点：

  INT数= BUF [0] | BUF [1];＆下; 8;
 

I receive a port number as 2 bytes (least significant byte first) and I want to convert it into an integer so that I can work with it. I've made this:

char buf[2]; //Where the received bytes are

char port[2];

port[0]=buf[1]; 

port[1]=buf[0];

int number=0;

number = (*((int *)port));

However, there's something wrong because I don't get the correct port number. Any ideas?

解决方案

I receive a port number as 2 bytes (least significant byte first)

You can then do this:

  int number = buf[0] | buf[1] << 8;

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