C：建立一个字节 [英] C: Building a byte

问题描述

我有16个元素的数组。我想这些评价为布尔0或1，然后存储在这2个字节，所以我可以写一个二进制文件。我该怎么做呢？

I have an array with 16 elements. I would like to evaluate these to a boolean 0 or 1 and then store this in 2 bytes so i can write to a binary file. How do I do this?

推荐答案

像这样的事情，你是什么意思？

Something like this you mean?

unsigned short binary = 0, i;
for ( i = 0; i < 16; ++i )
  if ( array[i] )
    binary |= 1 << i; 

// the i-th bit of binary is 1 if array[i] is true and 0 otherwise.

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