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.

#include<iostream>
#include<string>
#include<vector>

using namespace std;

int lengthOfLastWord(const char *s) {
	if (s==NULL)
		return 0;
	int laslen =0;
	while (*s!='\0')
	{
		if (*s!=' ')
		{
			int curlen = 0;
			while(*s!='\0'&&*s!=' ')s++,curlen++;
			laslen = curlen;
		}
		else
			s++;
	}
	return laslen;
}

Length of Last Word

原文：http://blog.csdn.net/li_chihang/article/details/44804165