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if(count < maxwidth) 为什么不写成 if(count < maxwidth)而写成 if( maxwidth && (count < maxwidth)) ?
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11个回答
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假如(count < maxwidth)成立,那就相当于maxwidth&&1,如果maxwidth最低位是0,这样不就不会输出前导码了吗?
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if( maxwidth && (count < maxwidth)) ?
假如count < maxwidth成立,不就相当于if( maxwidth && 1) ? 了吗 |
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逻辑关系只有0和非0 -1&&1的结果是1,是成立的C:UsersAdministratorDesktop11.png
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count用于计数,一定大于等于0,maxwidth是printf打印的时候人为输入的,也就是只能用于防止输入0却不能防止输入负数?这代码难道不是bug吗?谁写的代码
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有bug正常,会改就好了
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