Reverse Integer C语言

Given a 32-bit signed integer, reverse digits of an integer.

Example 1:

Input: 123
Output: 321

Example 2:

Input: -123
Output: -321

Example 3:

Input: 120
Output: 21

Note:
Assume we are dealing with an environment which could only store integers within the 32-bit signed integer range: [−231,  231 − 1]. For the purpose of this problem, assume that your function returns 0 when the reversed integer overflows.

代码：

int reverse(int x) {
    int Max=0x7fffffff;
    int Min=0x80000000;
    long b=0;
    while(x!=0)
    {
        b=x%10+b*10;
        x=x/10;
    }
    if(b>Max||b<Min)
        return 0;
    else
        return b;
}