string初始化

#include<iostream>

#include<string>

using namespace std;

int main(){

         string name;

         cout<<"Please input your name:"<<endl;

         getline(cin,name);

         if(name.empty()){

                   cout<<"input is null.."<<endl;

                   system("pause");

                   return 0;

         }

         if(name=="imooc"){

                   cout<<"you are a administrate"<<endl;

         }

         cout<<"hello"+name<<endl;

         cout<<"your name length"<<name.size()<<endl;

         cout<<"your name first letter is:"<<name[0]<<endl;

         system("pause");

         return 0;

}