The last length of the string

Title Description

Calculating the length of the last word of the string, the words separated by a space. 

Enter a description:

His string, a non-empty, a length of less than 5000.

Output Description:

Integer N, the length of the last word.

Example 1

Entry

copy

hello world

Export

copy

5 
problem-solving ideas: I think the direct use c ++ string type find_last_of () member function, find a space where the last number re-use string length function to do the appropriate operation on the ok 
Note: When a string with no spaces It is a special case

#include <iostream>
#include <cmath>
#include <algorithm>
#include <set>
#include <string>
#include <string.h>
#include <cstdio>
/*@author:浅滩
*family：
*time:
* / 
// I'm like a child playing at the beach,
 // time to time to pick up more than the usual smooth stones or more beautiful shells rejoice,
 // and demonstrated in front of me is totally unproven truths sea 
a using  namespace std;

int main ()
{
    string str;
    int i;
    getline(cin,str);
    i=str.find_last_of(' ');
    if(i==-1) cout<<str.size()<<endl;
    //cout<<str.size()<<endl;
    else
    cout<<str.size()-(i+1);

    //cout << "Hello world!" << endl;
    return 0;
}

 

Reproduced in: https: //www.cnblogs.com/cstdio1/p/11018097.html