leetcode-Length of Last Word(2014.3.31)

Given a string s consists of upper/lower-case alphabets and empty space characters ' ', return the length of last word in the string.
If the last word does not exist, return 0.
Note: A word is defined as a character sequence consists of non-space characters only.
For example,
Given s = "Hello World",
return 5.

对字符串接触的相对 较少，代码很少，很优雅。
class Solution {
public:
    int lengthOfLastWord(const char *s) {
        int n=strlen(s)-1;
        while(s
&&s
==' ')
        n--;
        int i=0;
       for(;s
&&s
!=' ';n--,i++);
        return i;
    }
};