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Question : Reading bits in C++
Hi,
Let's say I have a five byte data element "char m_TxBuf[5]" and I need to determine if a bit is set (high or not) in one of the elements, let's say for example in m_TxBuf[2] --> bit 3. (00001000) how do I determine this in C++.
Thanks for your support!
Answer : Reading bits in C++
First of all, it's best to use unsigned char when dealing with bits.
And to answer your question, this checks whether bit 3 is set in the third byte :
1: 2: 3: 4: 5:
unsigned char m_TxBuf[5]; if (m_TxBuf[2] & 0x08) { /* the bit is set */ }
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