Line 14: Char 23: runtime error: signed integer overflow: 746384741 * 10 cannot be represented

问题描述：

判断一个整数是否是回文数。回文数是指正序（从左向右）和倒序（从右向左）读都是一样的整数。

问题解决：

class Solution {
public:bool isPalindrome(int x) {int sum = 0;int temp = x;if(x < 0){return false;}while(x){sum = sum * 10 + x % 10;x /= 10;}if(temp == sum){return true;}else{return false;}}
};

编译错误：

Line 14: Char 23: runtime error: signed integer overflow: 746384741 * 10 cannot be represented in type 'int' (solution.cpp)

第14行：Char 23: 运行时错误，有符号整型数溢出：746384741 * 10 不能用类型 “int”（solution.cpp）表示

解决方法：

int 溢出，将其改为字节数更大的 double 类型即可。

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