c语言中32位int型数据在运算的时候可能会出现溢出的情况,如: -2147483648-1会得到什么结果? -2147483648乘(-1)会得到什么结果? 2147483647+1会得到什么结果? 在编译器中运行一下得到的结果分别是: -2147483648-1=2147483647: -2147483648乘(-1)=2147483647 2147483647+1=-2147483648 下面解释出现这几个情况的原因: ①-2147483648的二进制表示为1000 0000 0000 0…

隔了好久没更新了,由于我在学习PL和编译器/解释器的知识. 挺好奇这方面的,由于没有学过相关的课程.所以学起来有点吃力,进展缓慢.所以导致没啥可写的. 今天看到这么一段话: 32位的int型的取值是2147483647 到 -2147483648,可是.在C/C++语言中.你不能直接使用 -2147483648 来取代最小负数,由于它不是一个数.而是一个表达式.表达式是:"对正数2147483648取负".所以,2147483648已经溢出了.这就是为什么INT_MIN总是定义成 (-…

Implement atoi to convert a string to an integer. If no valid conversion could be performed, a zero value is returned. If the correct value is out of the range of representable values, INT_MAX (2147483647) or INT_MIN (-2147483648) is returned. int my…

题目: Implement atoi to convert a string to an integer. Hint: Carefully consider all possible input cases. If you want a challenge, please do not see below and ask yourself what are the possible input cases. Notes: It is intended for this problem to be…

Implement atoi to convert a string to an integer. Hint: Carefully consider all possible input cases. If you want a challenge, please do not see below and ask yourself what are the possible input cases. Notes: It is intended for this problem to be spe…

String to Integer (atoi) Implement atoi to convert a string to an integer. Hint: Carefully consider all possible input cases. If you want a challenge, please do not see below and ask yourself what are the possible input cases. Notes: It is intended f…

题目: Implement atoi to convert a string to an integer. Hint: Carefully consider all possible input cases. If you want a challenge, please do not see below and ask yourself what are the possible input cases. Notes: It is intended for this problem to be…

题目: Implement atoi to convert a string to an integer. Hint: Carefully consider all possible input cases. If you want a challenge, please do not see below and ask yourself what are the possible input cases. Notes: It is intended for this problem to be…

Implement atoi to convert a string to an integer. Hint: Carefully consider all possible input cases. Notes: It is intended for this problem to be specified vaguely (ie, no given input specs). You are responsible to gather all the input requirements u…

这个题..是要把字符串转为整数.注意是整数,我看到整数的时候松了一口气,没有小数点的判断应该更好做.而且基本的转化函数我想每个程序员都无法忘记: res=res*+(str[i]-'); 其实就是这么一句话的事情,然而这个题的通过率只有13%,在200多个题目中排名第五.本想不看提示自己写了一些判断,然而仍逃不掉wa的结局. 看了下面这堆requirement,还是有很大概率wa. Requirements for atoi: The function first discards as man…