题目链接:https://www.nowcoder.com/practice/8c949ea5f36f422594b306a2300315da?tpId=37&tqId=21224&rp=1&ru=/exam/oj/ta&qru=/exam/oj/ta&sourceUrl=%2Fexam%2Foj%2Fta%3Fpage%3D1%26tpId%3D37%26type%3D37&difficulty=undefined&judgeStatus=undefined&tags=&title=
题目如下:
#includeusing namespace std; int main(){ string str=""; while(getline(cin,str)){//每次获得一行输入,无限循环 int pos=str.size()-1; int res=0; while(pos>=0&&str[pos]==' ') pos--;//清除末尾为0的情况 for(;pos>=0;pos--){//开始正式计数 if(str[pos]!=' ') res++; else break; } cout<