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问 if((ReColBuff[2]!=0x8f)||(ReColBuff[2]!=0xaf)||(ReColBuff[2]!=0xcf))
{
         test();
}

else
{
         test12();

}
现在是ReColBuff[2]＝＝0x8f；或ReColBuff[2]!=0xaf；或ReColBuff[2]!=0xcf，但程序还是执行test();请问何故？ 答 1: 补充！现在是ReColBuff[2]＝＝0x8f；或ReColBuff[2]＝＝0xaf；或ReColBuff[2]＝＝0xcf，任一条件成立 答 2: 想的和做的不一样if(!((ReColBuff[2]==0x8f)||(ReColBuff[2]==0xaf)||(ReColBuff[2]==0xcf)))
{
         test();
}

else
{
         test12();

}
答 3: 实际就是语法错误或者可写为:

if((ReColBuff[2]==0x8f)||(ReColBuff[2]==0xaf)||(ReColBuff[2]==0xcf))
{
         test12();
}

else
{
         test();

}

注意if((ReColBuff[2]!=0x8f)||(ReColBuff[2]!=0xaf)||(ReColBuff[2]!=0xcf))中的矛盾....它实际是无条件执行语句!!!

例如:
当ReColBuff[2]=0x8f时,虽不满足ReColBuff[2]!=0x8f,但必满足ReColBuff[2]!=0xaf和ReColBuff[2]!=0xcf.

所以,主题中的语法是错误的...
答 4: 原来是我的技术不行！谢谢，各位！