LeetCode-Length of Last Word

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:
Code:

<span style="font-size:14px;">class Solution {
public:
int lengthOfLastWord(const char *s) {
int index = 0, length = 0;
bool word = false;
while (s[index] != '\0') {
if (s[index] == ' ')
word = false;
else
if (word) ++length;
else {
word = true;
length = 1;
}
++index;
}
return length;
}
};</span>