题解 | #字符串最后一个单词的长度#

#include <iostream>
#include <string>
using namespace std;

int main() {
    string str;
    getline(cin,str);
    int length =str.length();
    int n =0;
    for(int i=0;i <length;i++){
        if(str[i] == ' '){
            n =length-i-1;
        }
        if(i ==length -1 && n ==0){
            n =length;
        }
    }
    cout <<n <<endl;
}