Length of Last Word

-----QUESTION-----

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.

-----SOLUTION-----

class Solution {public:    int lengthOfLastWord(const char *s) {        int len = strlen(s);        int i = len-1;        while(s[i]==32) i--;        int lengthCounter = 0;        for(;i>=0; i--)        {            if(s[i] == 32) break;            lengthCounter++;                 }        return lengthCounter;    }};