a|=(1<<6); a&=~(1<<6);
#define BITSET (0X01<<6) void bitSet(unsigned char a) { a |= BITSET; } void bitClear(unsigned char a) { a &= ~BITSET; }
// 置1代码 char a; a = 45; a |= (1<<6);
// 置0代码 char a; a = 45; a &= ~(1<<6);
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